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Finding the Fourth Proportional to 121,230.64, 181,841.67 and 36,987.40

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Solution

The fourth proportional to 121,230.64, 181,841.67 and 36,987.40 is: 55,479.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,230.64 : 181,841.67 = 36,987.40 : x
  2. Step 2: Convert to fraction form
    121,230.64/181,841.67 = 36,987.40/x
  3. Step 3: Cross multiply
    121,230.64x = 181,841.67 × 36,987.40
  4. Step 4: Simplify right side
    121,230.64x = 6,725,850,584.96
  5. Step 5: Solve for x
    x = 6,725,850,584.96/121,230.64
  6. Step 6: Final answer
    x = 55,479.79

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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.