Home / 144,374.24-216,139.04-84,218.80

Finding the Fourth Proportional to 144,374.24, 216,139.04 and 84,218.80

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Solution

The fourth proportional to 144,374.24, 216,139.04 and 84,218.80 is: 126,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,374.24 : 216,139.04 = 84,218.80 : x
  2. Step 2: Convert to fraction form
    144,374.24/216,139.04 = 84,218.80/x
  3. Step 3: Cross multiply
    144,374.24x = 216,139.04 × 84,218.80
  4. Step 4: Simplify right side
    144,374.24x = 18,202,970,581.95
  5. Step 5: Solve for x
    x = 18,202,970,581.95/144,374.24
  6. Step 6: Final answer
    x = 126,081.85

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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.