Home / 89,743.20-134,614.80-77,277.30

Finding the Fourth Proportional to 89,743.20, 134,614.80 and 77,277.30

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Solution

The fourth proportional to 89,743.20, 134,614.80 and 77,277.30 is: 115,915.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,743.20 : 134,614.80 = 77,277.30 : x
  2. Step 2: Convert to fraction form
    89,743.20/134,614.80 = 77,277.30/x
  3. Step 3: Cross multiply
    89,743.20x = 134,614.80 × 77,277.30
  4. Step 4: Simplify right side
    89,743.20x = 10,402,668,284.04
  5. Step 5: Solve for x
    x = 10,402,668,284.04/89,743.20
  6. Step 6: Final answer
    x = 115,915.95

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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.