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Finding the Fourth Proportional to 137,356.58, 189,581.37 and 80,800.22

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Solution

The fourth proportional to 137,356.58, 189,581.37 and 80,800.22 is: 111,521.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,356.58 : 189,581.37 = 80,800.22 : x
  2. Step 2: Convert to fraction form
    137,356.58/189,581.37 = 80,800.22/x
  3. Step 3: Cross multiply
    137,356.58x = 189,581.37 × 80,800.22
  4. Step 4: Simplify right side
    137,356.58x = 15,318,216,403.90
  5. Step 5: Solve for x
    x = 15,318,216,403.90/137,356.58
  6. Step 6: Final answer
    x = 111,521.53

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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.