Home / 137,517.68-189,775.07-80,196.74

Finding the Fourth Proportional to 137,517.68, 189,775.07 and 80,196.74

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Solution

The fourth proportional to 137,517.68, 189,775.07 and 80,196.74 is: 110,671.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,517.68 : 189,775.07 = 80,196.74 : x
  2. Step 2: Convert to fraction form
    137,517.68/189,775.07 = 80,196.74/x
  3. Step 3: Cross multiply
    137,517.68x = 189,775.07 × 80,196.74
  4. Step 4: Simplify right side
    137,517.68x = 15,219,340,597.41
  5. Step 5: Solve for x
    x = 15,219,340,597.41/137,517.68
  6. Step 6: Final answer
    x = 110,671.89

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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.