Home / 130,380,203,999.80-195,570,305,999.70-80,790,381,407.80

Finding the Fourth Proportional to 130,380,203,999.80, 195,570,305,999.70 and 80,790,381,407.80

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Solution

The fourth proportional to 130,380,203,999.80, 195,570,305,999.70 and 80,790,381,407.80 is: 121,185,572,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,380,203,999.80 : 195,570,305,999.70 = 80,790,381,407.80 : x
  2. Step 2: Convert to fraction form
    130,380,203,999.80/195,570,305,999.70 = 80,790,381,407.80/x
  3. Step 3: Cross multiply
    130,380,203,999.80x = 195,570,305,999.70 × 80,790,381,407.80
  4. Step 4: Simplify right side
    130,380,203,999.80x = 15,800,199,613,755,921,793,024
  5. Step 5: Solve for x
    x = 15,800,199,613,755,921,793,024/130,380,203,999.80
  6. Step 6: Final answer
    x = 121,185,572,111.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.