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Finding the Fourth Proportional to 157,417.68, 217,229.04 and 85,795.28

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Solution

The fourth proportional to 157,417.68, 217,229.04 and 85,795.28 is: 118,393.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,417.68 : 217,229.04 = 85,795.28 : x
  2. Step 2: Convert to fraction form
    157,417.68/217,229.04 = 85,795.28/x
  3. Step 3: Cross multiply
    157,417.68x = 217,229.04 × 85,795.28
  4. Step 4: Simplify right side
    157,417.68x = 18,637,226,310.93
  5. Step 5: Solve for x
    x = 18,637,226,310.93/157,417.68
  6. Step 6: Final answer
    x = 118,393.48

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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.