Home / 147,039.90-220,650.57-68,139.42

Finding the Fourth Proportional to 147,039.90, 220,650.57 and 68,139.42

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Solution

The fourth proportional to 147,039.90, 220,650.57 and 68,139.42 is: 102,251.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,039.90 : 220,650.57 = 68,139.42 : x
  2. Step 2: Convert to fraction form
    147,039.90/220,650.57 = 68,139.42/x
  3. Step 3: Cross multiply
    147,039.90x = 220,650.57 × 68,139.42
  4. Step 4: Simplify right side
    147,039.90x = 15,035,001,862.47
  5. Step 5: Solve for x
    x = 15,035,001,862.47/147,039.90
  6. Step 6: Final answer
    x = 102,251.17

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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.