Home / 123,928.28-171,022.11-67,339.65

Finding the Fourth Proportional to 123,928.28, 171,022.11 and 67,339.65

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Solution

The fourth proportional to 123,928.28, 171,022.11 and 67,339.65 is: 92,929.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,928.28 : 171,022.11 = 67,339.65 : x
  2. Step 2: Convert to fraction form
    123,928.28/171,022.11 = 67,339.65/x
  3. Step 3: Cross multiply
    123,928.28x = 171,022.11 × 67,339.65
  4. Step 4: Simplify right side
    123,928.28x = 11,516,569,029.66
  5. Step 5: Solve for x
    x = 11,516,569,029.66/123,928.28
  6. Step 6: Final answer
    x = 92,929.31

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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.