Home / 99,939.28-137,914.48-54,616.24

Finding the Fourth Proportional to 99,939.28, 137,914.48 and 54,616.24

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Solution

The fourth proportional to 99,939.28, 137,914.48 and 54,616.24 is: 75,369.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,939.28 : 137,914.48 = 54,616.24 : x
  2. Step 2: Convert to fraction form
    99,939.28/137,914.48 = 54,616.24/x
  3. Step 3: Cross multiply
    99,939.28x = 137,914.48 × 54,616.24
  4. Step 4: Simplify right side
    99,939.28x = 7,532,370,339.16
  5. Step 5: Solve for x
    x = 7,532,370,339.16/99,939.28
  6. Step 6: Final answer
    x = 75,369.47

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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.