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Finding the Fourth Proportional to 124,711.88, 171,979.44 and 76,955.09

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Solution

The fourth proportional to 124,711.88, 171,979.44 and 76,955.09 is: 106,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,711.88 : 171,979.44 = 76,955.09 : x
  2. Step 2: Convert to fraction form
    124,711.88/171,979.44 = 76,955.09/x
  3. Step 3: Cross multiply
    124,711.88x = 171,979.44 × 76,955.09
  4. Step 4: Simplify right side
    124,711.88x = 13,234,693,283.35
  5. Step 5: Solve for x
    x = 13,234,693,283.35/124,711.88
  6. Step 6: Final answer
    x = 106,122.15

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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.