Home / 100,231.24-138,319.28-54,908.23

Finding the Fourth Proportional to 100,231.24, 138,319.28 and 54,908.23

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Solution

The fourth proportional to 100,231.24, 138,319.28 and 54,908.23 is: 75,773.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,231.24 : 138,319.28 = 54,908.23 : x
  2. Step 2: Convert to fraction form
    100,231.24/138,319.28 = 54,908.23/x
  3. Step 3: Cross multiply
    100,231.24x = 138,319.28 × 54,908.23
  4. Step 4: Simplify right side
    100,231.24x = 7,594,866,839.67
  5. Step 5: Solve for x
    x = 7,594,866,839.67/100,231.24
  6. Step 6: Final answer
    x = 75,773.45

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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.