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Finding the Fourth Proportional to 192,645.30, 288,962.55 and 87,464.10

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Solution

The fourth proportional to 192,645.30, 288,962.55 and 87,464.10 is: 131,193.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,645.30 : 288,962.55 = 87,464.10 : x
  2. Step 2: Convert to fraction form
    192,645.30/288,962.55 = 87,464.10/x
  3. Step 3: Cross multiply
    192,645.30x = 288,962.55 × 87,464.10
  4. Step 4: Simplify right side
    192,645.30x = 25,273,849,369.46
  5. Step 5: Solve for x
    x = 25,273,849,369.46/192,645.30
  6. Step 6: Final answer
    x = 131,193.70

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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.