Home / 186,590.09-279,719.38-72,711.53

Finding the Fourth Proportional to 186,590.09, 279,719.38 and 72,711.53

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Solution

The fourth proportional to 186,590.09, 279,719.38 and 72,711.53 is: 109,002.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,590.09 : 279,719.38 = 72,711.53 : x
  2. Step 2: Convert to fraction form
    186,590.09/279,719.38 = 72,711.53/x
  3. Step 3: Cross multiply
    186,590.09x = 279,719.38 × 72,711.53
  4. Step 4: Simplify right side
    186,590.09x = 20,338,825,200.61
  5. Step 5: Solve for x
    x = 20,338,825,200.61/186,590.09
  6. Step 6: Final answer
    x = 109,002.71

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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.