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Finding the Fourth Proportional to 189,054.45, 260,839.19 and 112,512.20

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Solution

The fourth proportional to 189,054.45, 260,839.19 and 112,512.20 is: 155,233.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,054.45 : 260,839.19 = 112,512.20 : x
  2. Step 2: Convert to fraction form
    189,054.45/260,839.19 = 112,512.20/x
  3. Step 3: Cross multiply
    189,054.45x = 260,839.19 × 112,512.20
  4. Step 4: Simplify right side
    189,054.45x = 29,347,589,246.36
  5. Step 5: Solve for x
    x = 29,347,589,246.36/189,054.45
  6. Step 6: Final answer
    x = 155,233.53

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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.