Home / 80,935,125.30-121,402,687.95-72,432,069.30

Finding the Fourth Proportional to 80,935,125.30, 121,402,687.95 and 72,432,069.30

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Solution

The fourth proportional to 80,935,125.30, 121,402,687.95 and 72,432,069.30 is: 108,648,103.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,935,125.30 : 121,402,687.95 = 72,432,069.30 : x
  2. Step 2: Convert to fraction form
    80,935,125.30/121,402,687.95 = 72,432,069.30/x
  3. Step 3: Cross multiply
    80,935,125.30x = 121,402,687.95 × 72,432,069.30
  4. Step 4: Simplify right side
    80,935,125.30x = 8,793,447,906,800,675
  5. Step 5: Solve for x
    x = 8,793,447,906,800,675/80,935,125.30
  6. Step 6: Final answer
    x = 108,648,103.95

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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.