Home / 156,052.87-215,291.69-90,630.56

Finding the Fourth Proportional to 156,052.87, 215,291.69 and 90,630.56

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Solution

The fourth proportional to 156,052.87, 215,291.69 and 90,630.56 is: 125,034.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,052.87 : 215,291.69 = 90,630.56 : x
  2. Step 2: Convert to fraction form
    156,052.87/215,291.69 = 90,630.56/x
  3. Step 3: Cross multiply
    156,052.87x = 215,291.69 × 90,630.56
  4. Step 4: Simplify right side
    156,052.87x = 19,512,005,436.66
  5. Step 5: Solve for x
    x = 19,512,005,436.66/156,052.87
  6. Step 6: Final answer
    x = 125,034.58

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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.