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Finding the Fourth Proportional to 189,487.90, 261,486.44 and 104,603.14

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Solution

The fourth proportional to 189,487.90, 261,486.44 and 104,603.14 is: 144,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,487.90 : 261,486.44 = 104,603.14 : x
  2. Step 2: Convert to fraction form
    189,487.90/261,486.44 = 104,603.14/x
  3. Step 3: Cross multiply
    189,487.90x = 261,486.44 × 104,603.14
  4. Step 4: Simplify right side
    189,487.90x = 27,352,302,691.42
  5. Step 5: Solve for x
    x = 27,352,302,691.42/189,487.90
  6. Step 6: Final answer
    x = 144,348.55

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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.