Home / 80,864.10-121,296.15-69,200.10

Finding the Fourth Proportional to 80,864.10, 121,296.15 and 69,200.10

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Solution

The fourth proportional to 80,864.10, 121,296.15 and 69,200.10 is: 103,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,864.10 : 121,296.15 = 69,200.10 : x
  2. Step 2: Convert to fraction form
    80,864.10/121,296.15 = 69,200.10/x
  3. Step 3: Cross multiply
    80,864.10x = 121,296.15 × 69,200.10
  4. Step 4: Simplify right side
    80,864.10x = 8,393,705,709.62
  5. Step 5: Solve for x
    x = 8,393,705,709.62/80,864.10
  6. Step 6: Final answer
    x = 103,800.15

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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.