Home / 123,780.24-170,160.03-106,489.62

Finding the Fourth Proportional to 123,780.24, 170,160.03 and 106,489.62

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Solution

The fourth proportional to 123,780.24, 170,160.03 and 106,489.62 is: 146,390.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,780.24 : 170,160.03 = 106,489.62 : x
  2. Step 2: Convert to fraction form
    123,780.24/170,160.03 = 106,489.62/x
  3. Step 3: Cross multiply
    123,780.24x = 170,160.03 × 106,489.62
  4. Step 4: Simplify right side
    123,780.24x = 18,120,276,933.89
  5. Step 5: Solve for x
    x = 18,120,276,933.89/123,780.24
  6. Step 6: Final answer
    x = 146,390.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.