Home / 157,619.47-217,514.55-85,999.45

Finding the Fourth Proportional to 157,619.47, 217,514.55 and 85,999.45

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Solution

The fourth proportional to 157,619.47, 217,514.55 and 85,999.45 is: 118,679.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,619.47 : 217,514.55 = 85,999.45 : x
  2. Step 2: Convert to fraction form
    157,619.47/217,514.55 = 85,999.45/x
  3. Step 3: Cross multiply
    157,619.47x = 217,514.55 × 85,999.45
  4. Step 4: Simplify right side
    157,619.47x = 18,706,131,667.00
  5. Step 5: Solve for x
    x = 18,706,131,667.00/157,619.47
  6. Step 6: Final answer
    x = 118,679.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.