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Finding the Fourth Proportional to 188,649.59, 260,331 and 103,766.66

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Solution

The fourth proportional to 188,649.59, 260,331 and 103,766.66 is: 143,195.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,649.59 : 260,331 = 103,766.66 : x
  2. Step 2: Convert to fraction form
    188,649.59/260,331 = 103,766.66/x
  3. Step 3: Cross multiply
    188,649.59x = 260,331 × 103,766.66
  4. Step 4: Simplify right side
    188,649.59x = 27,013,677,062.81
  5. Step 5: Solve for x
    x = 27,013,677,062.81/188,649.59
  6. Step 6: Final answer
    x = 143,195.00

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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.