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Finding the Fourth Proportional to 136,675.31, 204,834.05 and 73,421.49

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Solution

The fourth proportional to 136,675.31, 204,834.05 and 73,421.49 is: 110,036.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,675.31 : 204,834.05 = 73,421.49 : x
  2. Step 2: Convert to fraction form
    136,675.31/204,834.05 = 73,421.49/x
  3. Step 3: Cross multiply
    136,675.31x = 204,834.05 × 73,421.49
  4. Step 4: Simplify right side
    136,675.31x = 15,039,221,830.09
  5. Step 5: Solve for x
    x = 15,039,221,830.09/136,675.31
  6. Step 6: Final answer
    x = 110,036.13

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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.