Home / 147,540.10-221,382.15-68,613.70

Finding the Fourth Proportional to 147,540.10, 221,382.15 and 68,613.70

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Solution

The fourth proportional to 147,540.10, 221,382.15 and 68,613.70 is: 102,954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,540.10 : 221,382.15 = 68,613.70 : x
  2. Step 2: Convert to fraction form
    147,540.10/221,382.15 = 68,613.70/x
  3. Step 3: Cross multiply
    147,540.10x = 221,382.15 × 68,613.70
  4. Step 4: Simplify right side
    147,540.10x = 15,189,848,425.46
  5. Step 5: Solve for x
    x = 15,189,848,425.46/147,540.10
  6. Step 6: Final answer
    x = 102,954.03

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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.