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Finding the Fourth Proportional to 88,898.10, 133,347.15 and 82,139.70

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Solution

The fourth proportional to 88,898.10, 133,347.15 and 82,139.70 is: 123,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,898.10 : 133,347.15 = 82,139.70 : x
  2. Step 2: Convert to fraction form
    88,898.10/133,347.15 = 82,139.70/x
  3. Step 3: Cross multiply
    88,898.10x = 133,347.15 × 82,139.70
  4. Step 4: Simplify right side
    88,898.10x = 10,953,094,896.86
  5. Step 5: Solve for x
    x = 10,953,094,896.86/88,898.10
  6. Step 6: Final answer
    x = 123,209.55

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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.