Home / 147,121.60-220,682.40-88,139.20

Finding the Fourth Proportional to 147,121.60, 220,682.40 and 88,139.20

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Solution

The fourth proportional to 147,121.60, 220,682.40 and 88,139.20 is: 132,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,121.60 : 220,682.40 = 88,139.20 : x
  2. Step 2: Convert to fraction form
    147,121.60/220,682.40 = 88,139.20/x
  3. Step 3: Cross multiply
    147,121.60x = 220,682.40 × 88,139.20
  4. Step 4: Simplify right side
    147,121.60x = 19,450,770,190.08
  5. Step 5: Solve for x
    x = 19,450,770,190.08/147,121.60
  6. Step 6: Final answer
    x = 132,208.80

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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.