Home / 185,151.42-278,170.20-118,721.70

Finding the Fourth Proportional to 185,151.42, 278,170.20 and 118,721.70

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Solution

The fourth proportional to 185,151.42, 278,170.20 and 118,721.70 is: 178,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,151.42 : 278,170.20 = 118,721.70 : x
  2. Step 2: Convert to fraction form
    185,151.42/278,170.20 = 118,721.70/x
  3. Step 3: Cross multiply
    185,151.42x = 278,170.20 × 118,721.70
  4. Step 4: Simplify right side
    185,151.42x = 33,024,839,033.34
  5. Step 5: Solve for x
    x = 33,024,839,033.34/185,151.42
  6. Step 6: Final answer
    x = 178,366.65

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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.