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Finding the Fourth Proportional to 124,240.80, 186,141.60 and 120,129.60

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Solution

The fourth proportional to 124,240.80, 186,141.60 and 120,129.60 is: 179,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,240.80 : 186,141.60 = 120,129.60 : x
  2. Step 2: Convert to fraction form
    124,240.80/186,141.60 = 120,129.60/x
  3. Step 3: Cross multiply
    124,240.80x = 186,141.60 × 120,129.60
  4. Step 4: Simplify right side
    124,240.80x = 22,361,115,951.36
  5. Step 5: Solve for x
    x = 22,361,115,951.36/124,240.80
  6. Step 6: Final answer
    x = 179,982.07

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1.5x scale

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.