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Finding the Fourth Proportional to 88,937.30, 133,077.90 and 81,064.10

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Solution

The fourth proportional to 88,937.30, 133,077.90 and 81,064.10 is: 121,297.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,937.30 : 133,077.90 = 81,064.10 : x
  2. Step 2: Convert to fraction form
    88,937.30/133,077.90 = 81,064.10/x
  3. Step 3: Cross multiply
    88,937.30x = 133,077.90 × 81,064.10
  4. Step 4: Simplify right side
    88,937.30x = 10,787,840,193.39
  5. Step 5: Solve for x
    x = 10,787,840,193.39/88,937.30
  6. Step 6: Final answer
    x = 121,297.14

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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.