Home / 89,639.72-134,281.38-82,291.40

Finding the Fourth Proportional to 89,639.72, 134,281.38 and 82,291.40

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Solution

The fourth proportional to 89,639.72, 134,281.38 and 82,291.40 is: 123,273.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,639.72 : 134,281.38 = 82,291.40 : x
  2. Step 2: Convert to fraction form
    89,639.72/134,281.38 = 82,291.40/x
  3. Step 3: Cross multiply
    89,639.72x = 134,281.38 × 82,291.40
  4. Step 4: Simplify right side
    89,639.72x = 11,050,202,754.13
  5. Step 5: Solve for x
    x = 11,050,202,754.13/89,639.72
  6. Step 6: Final answer
    x = 123,273.51

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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.