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Finding the Fourth Proportional to 104,287.16, 155,089.10 and 100,965.66

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Solution

The fourth proportional to 104,287.16, 155,089.10 and 100,965.66 is: 150,149.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,287.16 : 155,089.10 = 100,965.66 : x
  2. Step 2: Convert to fraction form
    104,287.16/155,089.10 = 100,965.66/x
  3. Step 3: Cross multiply
    104,287.16x = 155,089.10 × 100,965.66
  4. Step 4: Simplify right side
    104,287.16x = 15,658,672,835.48
  5. Step 5: Solve for x
    x = 15,658,672,835.48/104,287.16
  6. Step 6: Final answer
    x = 150,149.58

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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.