Home / 80,769.40-121,154.10-73,252.60

Finding the Fourth Proportional to 80,769.40, 121,154.10 and 73,252.60

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Solution

The fourth proportional to 80,769.40, 121,154.10 and 73,252.60 is: 109,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,769.40 : 121,154.10 = 73,252.60 : x
  2. Step 2: Convert to fraction form
    80,769.40/121,154.10 = 73,252.60/x
  3. Step 3: Cross multiply
    80,769.40x = 121,154.10 × 73,252.60
  4. Step 4: Simplify right side
    80,769.40x = 8,874,852,825.66
  5. Step 5: Solve for x
    x = 8,874,852,825.66/80,769.40
  6. Step 6: Final answer
    x = 109,878.90

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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.