Home / 137,333.52-189,517.05-80,748.54

Finding the Fourth Proportional to 137,333.52, 189,517.05 and 80,748.54

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Solution

The fourth proportional to 137,333.52, 189,517.05 and 80,748.54 is: 111,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,333.52 : 189,517.05 = 80,748.54 : x
  2. Step 2: Convert to fraction form
    137,333.52/189,517.05 = 80,748.54/x
  3. Step 3: Cross multiply
    137,333.52x = 189,517.05 × 80,748.54
  4. Step 4: Simplify right side
    137,333.52x = 15,303,225,092.61
  5. Step 5: Solve for x
    x = 15,303,225,092.61/137,333.52
  6. Step 6: Final answer
    x = 111,431.10

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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.