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Finding the Fourth Proportional to 118,648.90, 177,714.15 and 92,145.70

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Solution

The fourth proportional to 118,648.90, 177,714.15 and 92,145.70 is: 138,017.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,648.90 : 177,714.15 = 92,145.70 : x
  2. Step 2: Convert to fraction form
    118,648.90/177,714.15 = 92,145.70/x
  3. Step 3: Cross multiply
    118,648.90x = 177,714.15 × 92,145.70
  4. Step 4: Simplify right side
    118,648.90x = 16,375,594,751.66
  5. Step 5: Solve for x
    x = 16,375,594,751.66/118,648.90
  6. Step 6: Final answer
    x = 138,017.25

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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.