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Finding the Fourth Proportional to 136,671.22, 205,005.12 and 113,248.54

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Solution

The fourth proportional to 136,671.22, 205,005.12 and 113,248.54 is: 169,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,671.22 : 205,005.12 = 113,248.54 : x
  2. Step 2: Convert to fraction form
    136,671.22/205,005.12 = 113,248.54/x
  3. Step 3: Cross multiply
    136,671.22x = 205,005.12 × 113,248.54
  4. Step 4: Simplify right side
    136,671.22x = 23,216,530,532.52
  5. Step 5: Solve for x
    x = 23,216,530,532.52/136,671.22
  6. Step 6: Final answer
    x = 169,871.39

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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.