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Finding the Fourth Proportional to 104,031.60, 155,658.60 and 69,039.60

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Solution

The fourth proportional to 104,031.60, 155,658.60 and 69,039.60 is: 103,301.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,031.60 : 155,658.60 = 69,039.60 : x
  2. Step 2: Convert to fraction form
    104,031.60/155,658.60 = 69,039.60/x
  3. Step 3: Cross multiply
    104,031.60x = 155,658.60 × 69,039.60
  4. Step 4: Simplify right side
    104,031.60x = 10,746,607,480.56
  5. Step 5: Solve for x
    x = 10,746,607,480.56/104,031.60
  6. Step 6: Final answer
    x = 103,301.38

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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.