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Finding the Fourth Proportional to 188,986.52, 260,791.80 and 104,101.76

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Solution

The fourth proportional to 188,986.52, 260,791.80 and 104,101.76 is: 143,655.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,986.52 : 260,791.80 = 104,101.76 : x
  2. Step 2: Convert to fraction form
    188,986.52/260,791.80 = 104,101.76/x
  3. Step 3: Cross multiply
    188,986.52x = 260,791.80 × 104,101.76
  4. Step 4: Simplify right side
    188,986.52x = 27,148,885,373.57
  5. Step 5: Solve for x
    x = 27,148,885,373.57/188,986.52
  6. Step 6: Final answer
    x = 143,655.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.