Home / 121,407.20-182,013.60-51,228.80

Finding the Fourth Proportional to 121,407.20, 182,013.60 and 51,228.80

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Solution

The fourth proportional to 121,407.20, 182,013.60 and 51,228.80 is: 76,802.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,407.20 : 182,013.60 = 51,228.80 : x
  2. Step 2: Convert to fraction form
    121,407.20/182,013.60 = 51,228.80/x
  3. Step 3: Cross multiply
    121,407.20x = 182,013.60 × 51,228.80
  4. Step 4: Simplify right side
    121,407.20x = 9,324,338,311.68
  5. Step 5: Solve for x
    x = 9,324,338,311.68/121,407.20
  6. Step 6: Final answer
    x = 76,802.19

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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.