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Finding the Fourth Proportional to 180,420.61, 248,976.69 and 99,843.31

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Solution

The fourth proportional to 180,420.61, 248,976.69 and 99,843.31 is: 137,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,420.61 : 248,976.69 = 99,843.31 : x
  2. Step 2: Convert to fraction form
    180,420.61/248,976.69 = 99,843.31/x
  3. Step 3: Cross multiply
    180,420.61x = 248,976.69 × 99,843.31
  4. Step 4: Simplify right side
    180,420.61x = 24,858,656,842.44
  5. Step 5: Solve for x
    x = 24,858,656,842.44/180,420.61
  6. Step 6: Final answer
    x = 137,781.69

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1.5x scale

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.