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Finding the Fourth Proportional to 157,251.02, 216,999.86 and 85,630.86

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Solution

The fourth proportional to 157,251.02, 216,999.86 and 85,630.86 is: 118,167.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,251.02 : 216,999.86 = 85,630.86 : x
  2. Step 2: Convert to fraction form
    157,251.02/216,999.86 = 85,630.86/x
  3. Step 3: Cross multiply
    157,251.02x = 216,999.86 × 85,630.86
  4. Step 4: Simplify right side
    157,251.02x = 18,581,884,203.53
  5. Step 5: Solve for x
    x = 18,581,884,203.53/157,251.02
  6. Step 6: Final answer
    x = 118,167.02

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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.