Home / 89,541.20-134,311.80-79,864.40

Finding the Fourth Proportional to 89,541.20, 134,311.80 and 79,864.40

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Solution

The fourth proportional to 89,541.20, 134,311.80 and 79,864.40 is: 119,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,541.20 : 134,311.80 = 79,864.40 : x
  2. Step 2: Convert to fraction form
    89,541.20/134,311.80 = 79,864.40/x
  3. Step 3: Cross multiply
    89,541.20x = 134,311.80 × 79,864.40
  4. Step 4: Simplify right side
    89,541.20x = 10,726,731,319.92
  5. Step 5: Solve for x
    x = 10,726,731,319.92/89,541.20
  6. Step 6: Final answer
    x = 119,796.60

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1.5x scale

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.