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Finding the Fourth Proportional to 159,386.50, 219,953.37 and 87,766.37

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Solution

The fourth proportional to 159,386.50, 219,953.37 and 87,766.37 is: 121,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,386.50 : 219,953.37 = 87,766.37 : x
  2. Step 2: Convert to fraction form
    159,386.50/219,953.37 = 87,766.37/x
  3. Step 3: Cross multiply
    159,386.50x = 219,953.37 × 87,766.37
  4. Step 4: Simplify right side
    159,386.50x = 19,304,508,854.17
  5. Step 5: Solve for x
    x = 19,304,508,854.17/159,386.50
  6. Step 6: Final answer
    x = 121,117.59

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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.