Home / 109,169.28-150,642.36-61,418.70

Finding the Fourth Proportional to 109,169.28, 150,642.36 and 61,418.70

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Solution

The fourth proportional to 109,169.28, 150,642.36 and 61,418.70 is: 84,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,169.28 : 150,642.36 = 61,418.70 : x
  2. Step 2: Convert to fraction form
    109,169.28/150,642.36 = 61,418.70/x
  3. Step 3: Cross multiply
    109,169.28x = 150,642.36 × 61,418.70
  4. Step 4: Simplify right side
    109,169.28x = 9,252,257,916.13
  5. Step 5: Solve for x
    x = 9,252,257,916.13/109,169.28
  6. Step 6: Final answer
    x = 84,751.48

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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.