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Finding the Fourth Proportional to 157,321.20, 217,102.19 and 85,701.27

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Solution

The fourth proportional to 157,321.20, 217,102.19 and 85,701.27 is: 118,267.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,321.20 : 217,102.19 = 85,701.27 : x
  2. Step 2: Convert to fraction form
    157,321.20/217,102.19 = 85,701.27/x
  3. Step 3: Cross multiply
    157,321.20x = 217,102.19 × 85,701.27
  4. Step 4: Simplify right side
    157,321.20x = 18,605,933,402.78
  5. Step 5: Solve for x
    x = 18,605,933,402.78/157,321.20
  6. Step 6: Final answer
    x = 118,267.17

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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.