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Finding the Fourth Proportional to 124,629, 171,938.80 and 76,799.04

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Solution

The fourth proportional to 124,629, 171,938.80 and 76,799.04 is: 105,952.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,629 : 171,938.80 = 76,799.04 : x
  2. Step 2: Convert to fraction form
    124,629/171,938.80 = 76,799.04/x
  3. Step 3: Cross multiply
    124,629x = 171,938.80 × 76,799.04
  4. Step 4: Simplify right side
    124,629x = 13,204,734,778.75
  5. Step 5: Solve for x
    x = 13,204,734,778.75/124,629
  6. Step 6: Final answer
    x = 105,952.34

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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.