Home / 159,741.20-220,440.12-88,128.08

Finding the Fourth Proportional to 159,741.20, 220,440.12 and 88,128.08

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Solution

The fourth proportional to 159,741.20, 220,440.12 and 88,128.08 is: 121,615.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,741.20 : 220,440.12 = 88,128.08 : x
  2. Step 2: Convert to fraction form
    159,741.20/220,440.12 = 88,128.08/x
  3. Step 3: Cross multiply
    159,741.20x = 220,440.12 × 88,128.08
  4. Step 4: Simplify right side
    159,741.20x = 19,426,964,530.57
  5. Step 5: Solve for x
    x = 19,426,964,530.57/159,741.20
  6. Step 6: Final answer
    x = 121,615.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.