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Finding the Fourth Proportional to 159,386.00, 219,952.46 and 87,766.20

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Solution

The fourth proportional to 159,386.00, 219,952.46 and 87,766.20 is: 121,117.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,386.00 : 219,952.46 = 87,766.20 : x
  2. Step 2: Convert to fraction form
    159,386.00/219,952.46 = 87,766.20/x
  3. Step 3: Cross multiply
    159,386.00x = 219,952.46 × 87,766.20
  4. Step 4: Simplify right side
    159,386.00x = 19,304,391,814.27
  5. Step 5: Solve for x
    x = 19,304,391,814.27/159,386.00
  6. Step 6: Final answer
    x = 121,117.24

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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.