Home / 107,439.12-148,274.81-69,278.11

Finding the Fourth Proportional to 107,439.12, 148,274.81 and 69,278.11

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Solution

The fourth proportional to 107,439.12, 148,274.81 and 69,278.11 is: 95,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,439.12 : 148,274.81 = 69,278.11 : x
  2. Step 2: Convert to fraction form
    107,439.12/148,274.81 = 69,278.11/x
  3. Step 3: Cross multiply
    107,439.12x = 148,274.81 × 69,278.11
  4. Step 4: Simplify right side
    107,439.12x = 10,272,198,597.41
  5. Step 5: Solve for x
    x = 10,272,198,597.41/107,439.12
  6. Step 6: Final answer
    x = 95,609.48

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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.