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Finding the Fourth Proportional to 185,530.50, 256,032.23 and 100,647.90

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Solution

The fourth proportional to 185,530.50, 256,032.23 and 100,647.90 is: 138,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,530.50 : 256,032.23 = 100,647.90 : x
  2. Step 2: Convert to fraction form
    185,530.50/256,032.23 = 100,647.90/x
  3. Step 3: Cross multiply
    185,530.50x = 256,032.23 × 100,647.90
  4. Step 4: Simplify right side
    185,530.50x = 25,769,105,778.58
  5. Step 5: Solve for x
    x = 25,769,105,778.58/185,530.50
  6. Step 6: Final answer
    x = 138,894.18

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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.