Home / 80,120,672.10-120,181,008.15-74,745,900.90

Finding the Fourth Proportional to 80,120,672.10, 120,181,008.15 and 74,745,900.90

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Solution

The fourth proportional to 80,120,672.10, 120,181,008.15 and 74,745,900.90 is: 112,118,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,672.10 : 120,181,008.15 = 74,745,900.90 : x
  2. Step 2: Convert to fraction form
    80,120,672.10/120,181,008.15 = 74,745,900.90/x
  3. Step 3: Cross multiply
    80,120,672.10x = 120,181,008.15 × 74,745,900.90
  4. Step 4: Simplify right side
    80,120,672.10x = 8,983,037,725,241,993
  5. Step 5: Solve for x
    x = 8,983,037,725,241,993/80,120,672.10
  6. Step 6: Final answer
    x = 112,118,851.35

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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.