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Finding the Fourth Proportional to 101,527.32, 139,960.92 and 71,218.62

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Solution

The fourth proportional to 101,527.32, 139,960.92 and 71,218.62 is: 98,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,527.32 : 139,960.92 = 71,218.62 : x
  2. Step 2: Convert to fraction form
    101,527.32/139,960.92 = 71,218.62/x
  3. Step 3: Cross multiply
    101,527.32x = 139,960.92 × 71,218.62
  4. Step 4: Simplify right side
    101,527.32x = 9,967,823,576.33
  5. Step 5: Solve for x
    x = 9,967,823,576.33/101,527.32
  6. Step 6: Final answer
    x = 98,178.73

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1.5x scale

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.