Home / 80,122,306.40-120,183,459.60-79,272,000.80

Finding the Fourth Proportional to 80,122,306.40, 120,183,459.60 and 79,272,000.80

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Solution

The fourth proportional to 80,122,306.40, 120,183,459.60 and 79,272,000.80 is: 118,908,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,122,306.40 : 120,183,459.60 = 79,272,000.80 : x
  2. Step 2: Convert to fraction form
    80,122,306.40/120,183,459.60 = 79,272,000.80/x
  3. Step 3: Cross multiply
    80,122,306.40x = 120,183,459.60 × 79,272,000.80
  4. Step 4: Simplify right side
    80,122,306.40x = 9,527,183,305,557,966
  5. Step 5: Solve for x
    x = 9,527,183,305,557,966/80,122,306.40
  6. Step 6: Final answer
    x = 118,908,001.20

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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.