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Finding the Fourth Proportional to 157,080.80, 216,773.52 and 85,462.76

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Solution

The fourth proportional to 157,080.80, 216,773.52 and 85,462.76 is: 117,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,080.80 : 216,773.52 = 85,462.76 : x
  2. Step 2: Convert to fraction form
    157,080.80/216,773.52 = 85,462.76/x
  3. Step 3: Cross multiply
    157,080.80x = 216,773.52 × 85,462.76
  4. Step 4: Simplify right side
    157,080.80x = 18,526,063,314.12
  5. Step 5: Solve for x
    x = 18,526,063,314.12/157,080.80
  6. Step 6: Final answer
    x = 117,939.71

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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.