Home / 165,169.12-247,781.52-76,386.40

Finding the Fourth Proportional to 165,169.12, 247,781.52 and 76,386.40

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Solution

The fourth proportional to 165,169.12, 247,781.52 and 76,386.40 is: 114,592.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,169.12 : 247,781.52 = 76,386.40 : x
  2. Step 2: Convert to fraction form
    165,169.12/247,781.52 = 76,386.40/x
  3. Step 3: Cross multiply
    165,169.12x = 247,781.52 × 76,386.40
  4. Step 4: Simplify right side
    165,169.12x = 18,927,138,299.33
  5. Step 5: Solve for x
    x = 18,927,138,299.33/165,169.12
  6. Step 6: Final answer
    x = 114,592.48

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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.