Home / 103,553.20-155,231.36-66,007.90

Finding the Fourth Proportional to 103,553.20, 155,231.36 and 66,007.90

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Solution

The fourth proportional to 103,553.20, 155,231.36 and 66,007.90 is: 98,949.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,553.20 : 155,231.36 = 66,007.90 : x
  2. Step 2: Convert to fraction form
    103,553.20/155,231.36 = 66,007.90/x
  3. Step 3: Cross multiply
    103,553.20x = 155,231.36 × 66,007.90
  4. Step 4: Simplify right side
    103,553.20x = 10,246,496,087.74
  5. Step 5: Solve for x
    x = 10,246,496,087.74/103,553.20
  6. Step 6: Final answer
    x = 98,949.10

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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.