Home / 108,020.46-149,002.70-69,719.88

Finding the Fourth Proportional to 108,020.46, 149,002.70 and 69,719.88

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Solution

The fourth proportional to 108,020.46, 149,002.70 and 69,719.88 is: 96,171.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,020.46 : 149,002.70 = 69,719.88 : x
  2. Step 2: Convert to fraction form
    108,020.46/149,002.70 = 69,719.88/x
  3. Step 3: Cross multiply
    108,020.46x = 149,002.70 × 69,719.88
  4. Step 4: Simplify right side
    108,020.46x = 10,388,450,015.08
  5. Step 5: Solve for x
    x = 10,388,450,015.08/108,020.46
  6. Step 6: Final answer
    x = 96,171.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.