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Finding the Fourth Proportional to 157,591.47, 217,467.68 and 90,523.47

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Solution

The fourth proportional to 157,591.47, 217,467.68 and 90,523.47 is: 124,917.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,591.47 : 217,467.68 = 90,523.47 : x
  2. Step 2: Convert to fraction form
    157,591.47/217,467.68 = 90,523.47/x
  3. Step 3: Cross multiply
    157,591.47x = 217,467.68 × 90,523.47
  4. Step 4: Simplify right side
    157,591.47x = 19,685,928,553.83
  5. Step 5: Solve for x
    x = 19,685,928,553.83/157,591.47
  6. Step 6: Final answer
    x = 124,917.48

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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.