Home / 80,921,753.40-121,382,630.10-80,071,447.80

Finding the Fourth Proportional to 80,921,753.40, 121,382,630.10 and 80,071,447.80

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Solution

The fourth proportional to 80,921,753.40, 121,382,630.10 and 80,071,447.80 is: 120,107,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,921,753.40 : 121,382,630.10 = 80,071,447.80 : x
  2. Step 2: Convert to fraction form
    80,921,753.40/121,382,630.10 = 80,071,447.80/x
  3. Step 3: Cross multiply
    80,921,753.40x = 121,382,630.10 × 80,071,447.80
  4. Step 4: Simplify right side
    80,921,753.40x = 9,719,282,929,878,858
  5. Step 5: Solve for x
    x = 9,719,282,929,878,858/80,921,753.40
  6. Step 6: Final answer
    x = 120,107,171.70

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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.