Home / 147,129.13-220,540.60-68,178.43

Finding the Fourth Proportional to 147,129.13, 220,540.60 and 68,178.43

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Solution

The fourth proportional to 147,129.13, 220,540.60 and 68,178.43 is: 102,196.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,129.13 : 220,540.60 = 68,178.43 : x
  2. Step 2: Convert to fraction form
    147,129.13/220,540.60 = 68,178.43/x
  3. Step 3: Cross multiply
    147,129.13x = 220,540.60 × 68,178.43
  4. Step 4: Simplify right side
    147,129.13x = 15,036,111,137.46
  5. Step 5: Solve for x
    x = 15,036,111,137.46/147,129.13
  6. Step 6: Final answer
    x = 102,196.70

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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.