Home / 103,517.02-155,275.53-82,642.78

Finding the Fourth Proportional to 103,517.02, 155,275.53 and 82,642.78

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Solution

The fourth proportional to 103,517.02, 155,275.53 and 82,642.78 is: 123,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,517.02 : 155,275.53 = 82,642.78 : x
  2. Step 2: Convert to fraction form
    103,517.02/155,275.53 = 82,642.78/x
  3. Step 3: Cross multiply
    103,517.02x = 155,275.53 × 82,642.78
  4. Step 4: Simplify right side
    103,517.02x = 12,832,401,465.17
  5. Step 5: Solve for x
    x = 12,832,401,465.17/103,517.02
  6. Step 6: Final answer
    x = 123,964.17

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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.