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Finding the Fourth Proportional to 159,483.31, 220,086.46 and 87,862.71

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Solution

The fourth proportional to 159,483.31, 220,086.46 and 87,862.71 is: 121,250.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,483.31 : 220,086.46 = 87,862.71 : x
  2. Step 2: Convert to fraction form
    159,483.31/220,086.46 = 87,862.71/x
  3. Step 3: Cross multiply
    159,483.31x = 220,086.46 × 87,862.71
  4. Step 4: Simplify right side
    159,483.31x = 19,337,392,809.91
  5. Step 5: Solve for x
    x = 19,337,392,809.91/159,483.31
  6. Step 6: Final answer
    x = 121,250.26

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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.