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Finding the Fourth Proportional to 103,042.91, 154,567.40 and 87,954.90

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Solution

The fourth proportional to 103,042.91, 154,567.40 and 87,954.90 is: 131,934.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,042.91 : 154,567.40 = 87,954.90 : x
  2. Step 2: Convert to fraction form
    103,042.91/154,567.40 = 87,954.90/x
  3. Step 3: Cross multiply
    103,042.91x = 154,567.40 × 87,954.90
  4. Step 4: Simplify right side
    103,042.91x = 13,594,959,190.86
  5. Step 5: Solve for x
    x = 13,594,959,190.86/103,042.91
  6. Step 6: Final answer
    x = 131,934.94

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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.