Home / 89,882.20-134,645.10-78,801.40

Finding the Fourth Proportional to 89,882.20, 134,645.10 and 78,801.40

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Solution

The fourth proportional to 89,882.20, 134,645.10 and 78,801.40 is: 118,045.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,882.20 : 134,645.10 = 78,801.40 : x
  2. Step 2: Convert to fraction form
    89,882.20/134,645.10 = 78,801.40/x
  3. Step 3: Cross multiply
    89,882.20x = 134,645.10 × 78,801.40
  4. Step 4: Simplify right side
    89,882.20x = 10,610,222,383.14
  5. Step 5: Solve for x
    x = 10,610,222,383.14/89,882.20
  6. Step 6: Final answer
    x = 118,045.87

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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.