Home / 81,657,499.20-122,486,248.80-79,744,311.60

Finding the Fourth Proportional to 81,657,499.20, 122,486,248.80 and 79,744,311.60

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Solution

The fourth proportional to 81,657,499.20, 122,486,248.80 and 79,744,311.60 is: 119,616,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,499.20 : 122,486,248.80 = 79,744,311.60 : x
  2. Step 2: Convert to fraction form
    81,657,499.20/122,486,248.80 = 79,744,311.60/x
  3. Step 3: Cross multiply
    81,657,499.20x = 122,486,248.80 × 79,744,311.60
  4. Step 4: Simplify right side
    81,657,499.20x = 9,767,581,591,022,326
  5. Step 5: Solve for x
    x = 9,767,581,591,022,326/81,657,499.20
  6. Step 6: Final answer
    x = 119,616,467.40

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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.