Home / 103,403.46-155,238.02-79,726.04

Finding the Fourth Proportional to 103,403.46, 155,238.02 and 79,726.04

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Solution

The fourth proportional to 103,403.46, 155,238.02 and 79,726.04 is: 119,691.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,403.46 : 155,238.02 = 79,726.04 : x
  2. Step 2: Convert to fraction form
    103,403.46/155,238.02 = 79,726.04/x
  3. Step 3: Cross multiply
    103,403.46x = 155,238.02 × 79,726.04
  4. Step 4: Simplify right side
    103,403.46x = 12,376,511,417.22
  5. Step 5: Solve for x
    x = 12,376,511,417.22/103,403.46
  6. Step 6: Final answer
    x = 119,691.46

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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.