Home / 137,356.08-189,580.68-80,799.72

Finding the Fourth Proportional to 137,356.08, 189,580.68 and 80,799.72

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Solution

The fourth proportional to 137,356.08, 189,580.68 and 80,799.72 is: 111,520.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,356.08 : 189,580.68 = 80,799.72 : x
  2. Step 2: Convert to fraction form
    137,356.08/189,580.68 = 80,799.72/x
  3. Step 3: Cross multiply
    137,356.08x = 189,580.68 × 80,799.72
  4. Step 4: Simplify right side
    137,356.08x = 15,318,065,861.41
  5. Step 5: Solve for x
    x = 15,318,065,861.41/137,356.08
  6. Step 6: Final answer
    x = 111,520.84

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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.