Home / 170,747.40-256,121.10-72,238.60

Finding the Fourth Proportional to 170,747.40, 256,121.10 and 72,238.60

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Solution

The fourth proportional to 170,747.40, 256,121.10 and 72,238.60 is: 108,357.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,747.40 : 256,121.10 = 72,238.60 : x
  2. Step 2: Convert to fraction form
    170,747.40/256,121.10 = 72,238.60/x
  3. Step 3: Cross multiply
    170,747.40x = 256,121.10 × 72,238.60
  4. Step 4: Simplify right side
    170,747.40x = 18,501,829,694.46
  5. Step 5: Solve for x
    x = 18,501,829,694.46/170,747.40
  6. Step 6: Final answer
    x = 108,357.90

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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.