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Finding the Fourth Proportional to 189,176.90, 261,065.90 and 104,297

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Solution

The fourth proportional to 189,176.90, 261,065.90 and 104,297 is: 143,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,176.90 : 261,065.90 = 104,297 : x
  2. Step 2: Convert to fraction form
    189,176.90/261,065.90 = 104,297/x
  3. Step 3: Cross multiply
    189,176.90x = 261,065.90 × 104,297
  4. Step 4: Simplify right side
    189,176.90x = 27,228,390,172.30
  5. Step 5: Solve for x
    x = 27,228,390,172.30/189,176.90
  6. Step 6: Final answer
    x = 143,930.84

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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.