Home / 157,748.52-217,691.30-86,128.32

Finding the Fourth Proportional to 157,748.52, 217,691.30 and 86,128.32

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Solution

The fourth proportional to 157,748.52, 217,691.30 and 86,128.32 is: 118,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,748.52 : 217,691.30 = 86,128.32 : x
  2. Step 2: Convert to fraction form
    157,748.52/217,691.30 = 86,128.32/x
  3. Step 3: Cross multiply
    157,748.52x = 217,691.30 × 86,128.32
  4. Step 4: Simplify right side
    157,748.52x = 18,749,385,947.62
  5. Step 5: Solve for x
    x = 18,749,385,947.62/157,748.52
  6. Step 6: Final answer
    x = 118,856.18

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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.