Home / 89,618.20-134,427.30-77,152.30

Finding the Fourth Proportional to 89,618.20, 134,427.30 and 77,152.30

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Solution

The fourth proportional to 89,618.20, 134,427.30 and 77,152.30 is: 115,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,618.20 : 134,427.30 = 77,152.30 : x
  2. Step 2: Convert to fraction form
    89,618.20/134,427.30 = 77,152.30/x
  3. Step 3: Cross multiply
    89,618.20x = 134,427.30 × 77,152.30
  4. Step 4: Simplify right side
    89,618.20x = 10,371,375,377.79
  5. Step 5: Solve for x
    x = 10,371,375,377.79/89,618.20
  6. Step 6: Final answer
    x = 115,728.45

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1.5x scale

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.