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Finding the Fourth Proportional to 157,580.91, 217,479.74 and 87,737.22

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Solution

The fourth proportional to 157,580.91, 217,479.74 and 87,737.22 is: 121,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,580.91 : 217,479.74 = 87,737.22 : x
  2. Step 2: Convert to fraction form
    157,580.91/217,479.74 = 87,737.22/x
  3. Step 3: Cross multiply
    157,580.91x = 217,479.74 × 87,737.22
  4. Step 4: Simplify right side
    157,580.91x = 19,081,067,355.24
  5. Step 5: Solve for x
    x = 19,081,067,355.24/157,580.91
  6. Step 6: Final answer
    x = 121,087.43

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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.