Home / 80,909,438.10-121,364,157.15-79,565,745.30

Finding the Fourth Proportional to 80,909,438.10, 121,364,157.15 and 79,565,745.30

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Solution

The fourth proportional to 80,909,438.10, 121,364,157.15 and 79,565,745.30 is: 119,348,617.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,909,438.10 : 121,364,157.15 = 79,565,745.30 : x
  2. Step 2: Convert to fraction form
    80,909,438.10/121,364,157.15 = 79,565,745.30/x
  3. Step 3: Cross multiply
    80,909,438.10x = 121,364,157.15 × 79,565,745.30
  4. Step 4: Simplify right side
    80,909,438.10x = 9,656,429,616,346,074
  5. Step 5: Solve for x
    x = 9,656,429,616,346,074/80,909,438.10
  6. Step 6: Final answer
    x = 119,348,617.95

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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.