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Finding the Fourth Proportional to 157,411.74, 217,221.84 and 85,790.22

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Solution

The fourth proportional to 157,411.74, 217,221.84 and 85,790.22 is: 118,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,411.74 : 217,221.84 = 85,790.22 : x
  2. Step 2: Convert to fraction form
    157,411.74/217,221.84 = 85,790.22/x
  3. Step 3: Cross multiply
    157,411.74x = 217,221.84 × 85,790.22
  4. Step 4: Simplify right side
    157,411.74x = 18,635,509,442.40
  5. Step 5: Solve for x
    x = 18,635,509,442.40/157,411.74
  6. Step 6: Final answer
    x = 118,387.04

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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.