Home / 89,428.80-134,143.20-88,116.60

Finding the Fourth Proportional to 89,428.80, 134,143.20 and 88,116.60

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Solution

The fourth proportional to 89,428.80, 134,143.20 and 88,116.60 is: 132,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,428.80 : 134,143.20 = 88,116.60 : x
  2. Step 2: Convert to fraction form
    89,428.80/134,143.20 = 88,116.60/x
  3. Step 3: Cross multiply
    89,428.80x = 134,143.20 × 88,116.60
  4. Step 4: Simplify right side
    89,428.80x = 11,820,242,697.12
  5. Step 5: Solve for x
    x = 11,820,242,697.12/89,428.80
  6. Step 6: Final answer
    x = 132,174.90

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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.