Home / 103,498.30-155,247.45-99,561.70

Finding the Fourth Proportional to 103,498.30, 155,247.45 and 99,561.70

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Solution

The fourth proportional to 103,498.30, 155,247.45 and 99,561.70 is: 149,342.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,498.30 : 155,247.45 = 99,561.70 : x
  2. Step 2: Convert to fraction form
    103,498.30/155,247.45 = 99,561.70/x
  3. Step 3: Cross multiply
    103,498.30x = 155,247.45 × 99,561.70
  4. Step 4: Simplify right side
    103,498.30x = 15,456,700,042.67
  5. Step 5: Solve for x
    x = 15,456,700,042.67/103,498.30
  6. Step 6: Final answer
    x = 149,342.55

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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.