Home / 147,039.40-220,649.82-68,138.92

Finding the Fourth Proportional to 147,039.40, 220,649.82 and 68,138.92

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Solution

The fourth proportional to 147,039.40, 220,649.82 and 68,138.92 is: 102,250.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,039.40 : 220,649.82 = 68,138.92 : x
  2. Step 2: Convert to fraction form
    147,039.40/220,649.82 = 68,138.92/x
  3. Step 3: Cross multiply
    147,039.40x = 220,649.82 × 68,138.92
  4. Step 4: Simplify right side
    147,039.40x = 15,034,840,432.99
  5. Step 5: Solve for x
    x = 15,034,840,432.99/147,039.40
  6. Step 6: Final answer
    x = 102,250.42

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1.5x scale

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.