Home / 89,617.20-134,498.70-86,701.20

Finding the Fourth Proportional to 89,617.20, 134,498.70 and 86,701.20

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Solution

The fourth proportional to 89,617.20, 134,498.70 and 86,701.20 is: 130,122.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,617.20 : 134,498.70 = 86,701.20 : x
  2. Step 2: Convert to fraction form
    89,617.20/134,498.70 = 86,701.20/x
  3. Step 3: Cross multiply
    89,617.20x = 134,498.70 × 86,701.20
  4. Step 4: Simplify right side
    89,617.20x = 11,661,198,688.44
  5. Step 5: Solve for x
    x = 11,661,198,688.44/89,617.20
  6. Step 6: Final answer
    x = 130,122.33

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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.