Home / 124,072.28-171,128.07-78,711.14

Finding the Fourth Proportional to 124,072.28, 171,128.07 and 78,711.14

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Solution

The fourth proportional to 124,072.28, 171,128.07 and 78,711.14 is: 108,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,072.28 : 171,128.07 = 78,711.14 : x
  2. Step 2: Convert to fraction form
    124,072.28/171,128.07 = 78,711.14/x
  3. Step 3: Cross multiply
    124,072.28x = 171,128.07 × 78,711.14
  4. Step 4: Simplify right side
    124,072.28x = 13,469,685,475.70
  5. Step 5: Solve for x
    x = 13,469,685,475.70/124,072.28
  6. Step 6: Final answer
    x = 108,563.21

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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.