Home / 134,023.60-200,743.80-81,341.20

Finding the Fourth Proportional to 134,023.60, 200,743.80 and 81,341.20

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Solution

The fourth proportional to 134,023.60, 200,743.80 and 81,341.20 is: 121,834.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,023.60 : 200,743.80 = 81,341.20 : x
  2. Step 2: Convert to fraction form
    134,023.60/200,743.80 = 81,341.20/x
  3. Step 3: Cross multiply
    134,023.60x = 200,743.80 × 81,341.20
  4. Step 4: Simplify right side
    134,023.60x = 16,328,741,584.56
  5. Step 5: Solve for x
    x = 16,328,741,584.56/134,023.60
  6. Step 6: Final answer
    x = 121,834.82

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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.