Home / 156,986.40-235,479.60-51,791.70

Finding the Fourth Proportional to 156,986.40, 235,479.60 and 51,791.70

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Solution

The fourth proportional to 156,986.40, 235,479.60 and 51,791.70 is: 77,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.40 : 235,479.60 = 51,791.70 : x
  2. Step 2: Convert to fraction form
    156,986.40/235,479.60 = 51,791.70/x
  3. Step 3: Cross multiply
    156,986.40x = 235,479.60 × 51,791.70
  4. Step 4: Simplify right side
    156,986.40x = 12,195,888,799.32
  5. Step 5: Solve for x
    x = 12,195,888,799.32/156,986.40
  6. Step 6: Final answer
    x = 77,687.55

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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.