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Finding the Fourth Proportional to 157,643.52, 217,530.24 and 90,597.12

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Solution

The fourth proportional to 157,643.52, 217,530.24 and 90,597.12 is: 125,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,643.52 : 217,530.24 = 90,597.12 : x
  2. Step 2: Convert to fraction form
    157,643.52/217,530.24 = 90,597.12/x
  3. Step 3: Cross multiply
    157,643.52x = 217,530.24 × 90,597.12
  4. Step 4: Simplify right side
    157,643.52x = 19,707,613,256.91
  5. Step 5: Solve for x
    x = 19,707,613,256.91/157,643.52
  6. Step 6: Final answer
    x = 125,013.79

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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.