Home / 121,353,105.40-182,029,658.10-80,538,436.60

Finding the Fourth Proportional to 121,353,105.40, 182,029,658.10 and 80,538,436.60

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Solution

The fourth proportional to 121,353,105.40, 182,029,658.10 and 80,538,436.60 is: 120,807,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,353,105.40 : 182,029,658.10 = 80,538,436.60 : x
  2. Step 2: Convert to fraction form
    121,353,105.40/182,029,658.10 = 80,538,436.60/x
  3. Step 3: Cross multiply
    121,353,105.40x = 182,029,658.10 × 80,538,436.60
  4. Step 4: Simplify right side
    121,353,105.40x = 14,660,384,078,206,524
  5. Step 5: Solve for x
    x = 14,660,384,078,206,524/121,353,105.40
  6. Step 6: Final answer
    x = 120,807,654.90

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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.