Home / 89,930.21-123,988.39-73,737.90

Finding the Fourth Proportional to 89,930.21, 123,988.39 and 73,737.90

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Solution

The fourth proportional to 89,930.21, 123,988.39 and 73,737.90 is: 101,663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,930.21 : 123,988.39 = 73,737.90 : x
  2. Step 2: Convert to fraction form
    89,930.21/123,988.39 = 73,737.90/x
  3. Step 3: Cross multiply
    89,930.21x = 123,988.39 × 73,737.90
  4. Step 4: Simplify right side
    89,930.21x = 9,142,643,318.64
  5. Step 5: Solve for x
    x = 9,142,643,318.64/89,930.21
  6. Step 6: Final answer
    x = 101,663.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.