Home / 99,680.76-137,562.75-54,361.21

Finding the Fourth Proportional to 99,680.76, 137,562.75 and 54,361.21

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Solution

The fourth proportional to 99,680.76, 137,562.75 and 54,361.21 is: 75,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,680.76 : 137,562.75 = 54,361.21 : x
  2. Step 2: Convert to fraction form
    99,680.76/137,562.75 = 54,361.21/x
  3. Step 3: Cross multiply
    99,680.76x = 137,562.75 × 54,361.21
  4. Step 4: Simplify right side
    99,680.76x = 7,478,077,540.93
  5. Step 5: Solve for x
    x = 7,478,077,540.93/99,680.76
  6. Step 6: Final answer
    x = 75,020.27

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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.