Home / 80,909,465.60-121,364,198.40-79,565,772.80

Finding the Fourth Proportional to 80,909,465.60, 121,364,198.40 and 79,565,772.80

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Solution

The fourth proportional to 80,909,465.60, 121,364,198.40 and 79,565,772.80 is: 119,348,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,909,465.60 : 121,364,198.40 = 79,565,772.80 : x
  2. Step 2: Convert to fraction form
    80,909,465.60/121,364,198.40 = 79,565,772.80/x
  3. Step 3: Cross multiply
    80,909,465.60x = 121,364,198.40 × 79,565,772.80
  4. Step 4: Simplify right side
    80,909,465.60x = 9,656,436,235,948,524
  5. Step 5: Solve for x
    x = 9,656,436,235,948,524/80,909,465.60
  6. Step 6: Final answer
    x = 119,348,659.20

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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.