Home / 119,931.38-165,502.65-65,481.68

Finding the Fourth Proportional to 119,931.38, 165,502.65 and 65,481.68

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Solution

The fourth proportional to 119,931.38, 165,502.65 and 65,481.68 is: 90,363.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,931.38 : 165,502.65 = 65,481.68 : x
  2. Step 2: Convert to fraction form
    119,931.38/165,502.65 = 65,481.68/x
  3. Step 3: Cross multiply
    119,931.38x = 165,502.65 × 65,481.68
  4. Step 4: Simplify right side
    119,931.38x = 10,837,391,566.45
  5. Step 5: Solve for x
    x = 10,837,391,566.45/119,931.38
  6. Step 6: Final answer
    x = 90,363.27

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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.