Home / 80,888,920.30-121,333,380.45-67,436,820

Finding the Fourth Proportional to 80,888,920.30, 121,333,380.45 and 67,436,820

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Solution

The fourth proportional to 80,888,920.30, 121,333,380.45 and 67,436,820 is: 101,155,230

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,888,920.30 : 121,333,380.45 = 67,436,820 : x
  2. Step 2: Convert to fraction form
    80,888,920.30/121,333,380.45 = 67,436,820/x
  3. Step 3: Cross multiply
    80,888,920.30x = 121,333,380.45 × 67,436,820
  4. Step 4: Simplify right side
    80,888,920.30x = 8,182,337,337,398,169
  5. Step 5: Solve for x
    x = 8,182,337,337,398,169/80,888,920.30
  6. Step 6: Final answer
    x = 101,155,230

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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.