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Finding the Fourth Proportional to 104,307, 155,118.66 and 100,985.61

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Solution

The fourth proportional to 104,307, 155,118.66 and 100,985.61 is: 150,179.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,307 : 155,118.66 = 100,985.61 : x
  2. Step 2: Convert to fraction form
    104,307/155,118.66 = 100,985.61/x
  3. Step 3: Cross multiply
    104,307x = 155,118.66 × 100,985.61
  4. Step 4: Simplify right side
    104,307x = 15,664,752,502.48
  5. Step 5: Solve for x
    x = 15,664,752,502.48/104,307
  6. Step 6: Final answer
    x = 150,179.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.