Home / 103,340.30-155,010.45-99,403.70

Finding the Fourth Proportional to 103,340.30, 155,010.45 and 99,403.70

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Solution

The fourth proportional to 103,340.30, 155,010.45 and 99,403.70 is: 149,105.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,340.30 : 155,010.45 = 99,403.70 : x
  2. Step 2: Convert to fraction form
    103,340.30/155,010.45 = 99,403.70/x
  3. Step 3: Cross multiply
    103,340.30x = 155,010.45 × 99,403.70
  4. Step 4: Simplify right side
    103,340.30x = 15,408,612,268.67
  5. Step 5: Solve for x
    x = 15,408,612,268.67/103,340.30
  6. Step 6: Final answer
    x = 149,105.55

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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.