Home / 165,318.30-247,977.45-86,456.70

Finding the Fourth Proportional to 165,318.30, 247,977.45 and 86,456.70

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Solution

The fourth proportional to 165,318.30, 247,977.45 and 86,456.70 is: 129,685.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,318.30 : 247,977.45 = 86,456.70 : x
  2. Step 2: Convert to fraction form
    165,318.30/247,977.45 = 86,456.70/x
  3. Step 3: Cross multiply
    165,318.30x = 247,977.45 × 86,456.70
  4. Step 4: Simplify right side
    165,318.30x = 21,439,312,001.42
  5. Step 5: Solve for x
    x = 21,439,312,001.42/165,318.30
  6. Step 6: Final answer
    x = 129,685.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.