Home / 82,718,825.40-123,839,089.65-80,327,340.90

Finding the Fourth Proportional to 82,718,825.40, 123,839,089.65 and 80,327,340.90

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Solution

The fourth proportional to 82,718,825.40, 123,839,089.65 and 80,327,340.90 is: 120,258,776.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,718,825.40 : 123,839,089.65 = 80,327,340.90 : x
  2. Step 2: Convert to fraction form
    82,718,825.40/123,839,089.65 = 80,327,340.90/x
  3. Step 3: Cross multiply
    82,718,825.40x = 123,839,089.65 × 80,327,340.90
  4. Step 4: Simplify right side
    82,718,825.40x = 9,947,664,771,061,212
  5. Step 5: Solve for x
    x = 9,947,664,771,061,212/82,718,825.40
  6. Step 6: Final answer
    x = 120,258,776.92

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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.