Home / 100,384.31-138,523.87-55,052.66

Finding the Fourth Proportional to 100,384.31, 138,523.87 and 55,052.66

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Solution

The fourth proportional to 100,384.31, 138,523.87 and 55,052.66 is: 75,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,384.31 : 138,523.87 = 55,052.66 : x
  2. Step 2: Convert to fraction form
    100,384.31/138,523.87 = 55,052.66/x
  3. Step 3: Cross multiply
    100,384.31x = 138,523.87 × 55,052.66
  4. Step 4: Simplify right side
    100,384.31x = 7,626,107,932.12
  5. Step 5: Solve for x
    x = 7,626,107,932.12/100,384.31
  6. Step 6: Final answer
    x = 75,969.12

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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.