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Finding the Fourth Proportional to 134,791.80, 201,788.34 and 99,888.12

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Solution

The fourth proportional to 134,791.80, 201,788.34 and 99,888.12 is: 149,536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,791.80 : 201,788.34 = 99,888.12 : x
  2. Step 2: Convert to fraction form
    134,791.80/201,788.34 = 99,888.12/x
  3. Step 3: Cross multiply
    134,791.80x = 201,788.34 × 99,888.12
  4. Step 4: Simplify right side
    134,791.80x = 20,156,257,920.52
  5. Step 5: Solve for x
    x = 20,156,257,920.52/134,791.80
  6. Step 6: Final answer
    x = 149,536.23

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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.