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Finding the Fourth Proportional to 83,980.66, 125,356.54 and 74,016.49

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Solution

The fourth proportional to 83,980.66, 125,356.54 and 74,016.49 is: 110,483.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,980.66 : 125,356.54 = 74,016.49 : x
  2. Step 2: Convert to fraction form
    83,980.66/125,356.54 = 74,016.49/x
  3. Step 3: Cross multiply
    83,980.66x = 125,356.54 × 74,016.49
  4. Step 4: Simplify right side
    83,980.66x = 9,278,450,462.56
  5. Step 5: Solve for x
    x = 9,278,450,462.56/83,980.66
  6. Step 6: Final answer
    x = 110,483.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.