Home / 186,379.12-279,148.08-86,329.15

Finding the Fourth Proportional to 186,379.12, 279,148.08 and 86,329.15

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Solution

The fourth proportional to 186,379.12, 279,148.08 and 86,329.15 is: 129,298.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,379.12 : 279,148.08 = 86,329.15 : x
  2. Step 2: Convert to fraction form
    186,379.12/279,148.08 = 86,329.15/x
  3. Step 3: Cross multiply
    186,379.12x = 279,148.08 × 86,329.15
  4. Step 4: Simplify right side
    186,379.12x = 24,098,616,470.53
  5. Step 5: Solve for x
    x = 24,098,616,470.53/186,379.12
  6. Step 6: Final answer
    x = 129,298.91

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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.