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Finding the Fourth Proportional to 121,397.88, 182,210.58 and 74,741.88

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Solution

The fourth proportional to 121,397.88, 182,210.58 and 74,741.88 is: 112,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,397.88 : 182,210.58 = 74,741.88 : x
  2. Step 2: Convert to fraction form
    121,397.88/182,210.58 = 74,741.88/x
  3. Step 3: Cross multiply
    121,397.88x = 182,210.58 × 74,741.88
  4. Step 4: Simplify right side
    121,397.88x = 13,618,761,305.09
  5. Step 5: Solve for x
    x = 13,618,761,305.09/121,397.88
  6. Step 6: Final answer
    x = 112,182.86

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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.