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Finding the Fourth Proportional to 188,543.56, 260,187.78 and 103,659.88

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Solution

The fourth proportional to 188,543.56, 260,187.78 and 103,659.88 is: 143,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,543.56 : 260,187.78 = 103,659.88 : x
  2. Step 2: Convert to fraction form
    188,543.56/260,187.78 = 103,659.88/x
  3. Step 3: Cross multiply
    188,543.56x = 260,187.78 × 103,659.88
  4. Step 4: Simplify right side
    188,543.56x = 26,971,034,052.27
  5. Step 5: Solve for x
    x = 26,971,034,052.27/188,543.56
  6. Step 6: Final answer
    x = 143,049.35

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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.