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Finding the Fourth Proportional to 145,999.90, 218,999.85 and 132,003.10

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Solution

The fourth proportional to 145,999.90, 218,999.85 and 132,003.10 is: 198,004.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,999.90 : 218,999.85 = 132,003.10 : x
  2. Step 2: Convert to fraction form
    145,999.90/218,999.85 = 132,003.10/x
  3. Step 3: Cross multiply
    145,999.90x = 218,999.85 × 132,003.10
  4. Step 4: Simplify right side
    145,999.90x = 28,908,659,099.54
  5. Step 5: Solve for x
    x = 28,908,659,099.54/145,999.90
  6. Step 6: Final answer
    x = 198,004.65

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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.