Home / 125,946.20-189,065.10-72,680.60

Finding the Fourth Proportional to 125,946.20, 189,065.10 and 72,680.60

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Solution

The fourth proportional to 125,946.20, 189,065.10 and 72,680.60 is: 109,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,946.20 : 189,065.10 = 72,680.60 : x
  2. Step 2: Convert to fraction form
    125,946.20/189,065.10 = 72,680.60/x
  3. Step 3: Cross multiply
    125,946.20x = 189,065.10 × 72,680.60
  4. Step 4: Simplify right side
    125,946.20x = 13,741,364,907.06
  5. Step 5: Solve for x
    x = 13,741,364,907.06/125,946.20
  6. Step 6: Final answer
    x = 109,105.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.