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Finding the Fourth Proportional to 103,648.80, 155,278.80 and 96,650.40

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Solution

The fourth proportional to 103,648.80, 155,278.80 and 96,650.40 is: 144,794.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,648.80 : 155,278.80 = 96,650.40 : x
  2. Step 2: Convert to fraction form
    103,648.80/155,278.80 = 96,650.40/x
  3. Step 3: Cross multiply
    103,648.80x = 155,278.80 × 96,650.40
  4. Step 4: Simplify right side
    103,648.80x = 15,007,758,131.52
  5. Step 5: Solve for x
    x = 15,007,758,131.52/103,648.80
  6. Step 6: Final answer
    x = 144,794.33

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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.