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Finding the Fourth Proportional to 188,587.82, 260,248.88 and 140,405

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Solution

The fourth proportional to 188,587.82, 260,248.88 and 140,405 is: 193,757.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,587.82 : 260,248.88 = 140,405 : x
  2. Step 2: Convert to fraction form
    188,587.82/260,248.88 = 140,405/x
  3. Step 3: Cross multiply
    188,587.82x = 260,248.88 × 140,405
  4. Step 4: Simplify right side
    188,587.82x = 36,540,243,996.40
  5. Step 5: Solve for x
    x = 36,540,243,996.40/188,587.82
  6. Step 6: Final answer
    x = 193,757.18

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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.