Home / 89,989.39-134,691.14-66,287.60

Finding the Fourth Proportional to 89,989.39, 134,691.14 and 66,287.60

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Solution

The fourth proportional to 89,989.39, 134,691.14 and 66,287.60 is: 99,215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,989.39 : 134,691.14 = 66,287.60 : x
  2. Step 2: Convert to fraction form
    89,989.39/134,691.14 = 66,287.60/x
  3. Step 3: Cross multiply
    89,989.39x = 134,691.14 × 66,287.60
  4. Step 4: Simplify right side
    89,989.39x = 8,928,352,411.86
  5. Step 5: Solve for x
    x = 8,928,352,411.86/89,989.39
  6. Step 6: Final answer
    x = 99,215.61

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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.