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Finding the Fourth Proportional to 136,488.96, 204,955.68 and 84,230.64

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Solution

The fourth proportional to 136,488.96, 204,955.68 and 84,230.64 is: 126,483.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,488.96 : 204,955.68 = 84,230.64 : x
  2. Step 2: Convert to fraction form
    136,488.96/204,955.68 = 84,230.64/x
  3. Step 3: Cross multiply
    136,488.96x = 204,955.68 × 84,230.64
  4. Step 4: Simplify right side
    136,488.96x = 17,263,548,098.04
  5. Step 5: Solve for x
    x = 17,263,548,098.04/136,488.96
  6. Step 6: Final answer
    x = 126,483.11

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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.