Home / 157,131.50-216,842.13-85,511.43

Finding the Fourth Proportional to 157,131.50, 216,842.13 and 85,511.43

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Solution

The fourth proportional to 157,131.50, 216,842.13 and 85,511.43 is: 118,006.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,131.50 : 216,842.13 = 85,511.43 : x
  2. Step 2: Convert to fraction form
    157,131.50/216,842.13 = 85,511.43/x
  3. Step 3: Cross multiply
    157,131.50x = 216,842.13 × 85,511.43
  4. Step 4: Simplify right side
    157,131.50x = 18,542,480,620.55
  5. Step 5: Solve for x
    x = 18,542,480,620.55/157,131.50
  6. Step 6: Final answer
    x = 118,006.14

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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.