Home / 99,680.18-137,561.96-54,360.63

Finding the Fourth Proportional to 99,680.18, 137,561.96 and 54,360.63

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Solution

The fourth proportional to 99,680.18, 137,561.96 and 54,360.63 is: 75,019.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,680.18 : 137,561.96 = 54,360.63 : x
  2. Step 2: Convert to fraction form
    99,680.18/137,561.96 = 54,360.63/x
  3. Step 3: Cross multiply
    99,680.18x = 137,561.96 × 54,360.63
  4. Step 4: Simplify right side
    99,680.18x = 7,477,954,945.54
  5. Step 5: Solve for x
    x = 7,477,954,945.54/99,680.18
  6. Step 6: Final answer
    x = 75,019.48

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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.