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Finding the Fourth Proportional to 136,248.04, 204,076.68 and 65,980

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Solution

The fourth proportional to 136,248.04, 204,076.68 and 65,980 is: 98,826.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,248.04 : 204,076.68 = 65,980 : x
  2. Step 2: Convert to fraction form
    136,248.04/204,076.68 = 65,980/x
  3. Step 3: Cross multiply
    136,248.04x = 204,076.68 × 65,980
  4. Step 4: Simplify right side
    136,248.04x = 13,464,979,346.40
  5. Step 5: Solve for x
    x = 13,464,979,346.40/136,248.04
  6. Step 6: Final answer
    x = 98,826.96

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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.