Home / 124,976.40-187,464.60-80,653.20

Finding the Fourth Proportional to 124,976.40, 187,464.60 and 80,653.20

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Solution

The fourth proportional to 124,976.40, 187,464.60 and 80,653.20 is: 120,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,976.40 : 187,464.60 = 80,653.20 : x
  2. Step 2: Convert to fraction form
    124,976.40/187,464.60 = 80,653.20/x
  3. Step 3: Cross multiply
    124,976.40x = 187,464.60 × 80,653.20
  4. Step 4: Simplify right side
    124,976.40x = 15,119,619,876.72
  5. Step 5: Solve for x
    x = 15,119,619,876.72/124,976.40
  6. Step 6: Final answer
    x = 120,979.80

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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.