Home / 89,851.10-134,776.65-81,103.10

Finding the Fourth Proportional to 89,851.10, 134,776.65 and 81,103.10

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Solution

The fourth proportional to 89,851.10, 134,776.65 and 81,103.10 is: 121,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,851.10 : 134,776.65 = 81,103.10 : x
  2. Step 2: Convert to fraction form
    89,851.10/134,776.65 = 81,103.10/x
  3. Step 3: Cross multiply
    89,851.10x = 134,776.65 × 81,103.10
  4. Step 4: Simplify right side
    89,851.10x = 10,930,804,122.62
  5. Step 5: Solve for x
    x = 10,930,804,122.62/89,851.10
  6. Step 6: Final answer
    x = 121,654.65

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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.