Home / 99,928.78-137,895.86-54,607.11

Finding the Fourth Proportional to 99,928.78, 137,895.86 and 54,607.11

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Solution

The fourth proportional to 99,928.78, 137,895.86 and 54,607.11 is: 75,354.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,928.78 : 137,895.86 = 54,607.11 : x
  2. Step 2: Convert to fraction form
    99,928.78/137,895.86 = 54,607.11/x
  3. Step 3: Cross multiply
    99,928.78x = 137,895.86 × 54,607.11
  4. Step 4: Simplify right side
    99,928.78x = 7,530,094,406.68
  5. Step 5: Solve for x
    x = 7,530,094,406.68/99,928.78
  6. Step 6: Final answer
    x = 75,354.61

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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.