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Finding the Fourth Proportional to 104,282.60, 155,620.69 and 85,850.60

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Solution

The fourth proportional to 104,282.60, 155,620.69 and 85,850.60 is: 128,114.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,282.60 : 155,620.69 = 85,850.60 : x
  2. Step 2: Convert to fraction form
    104,282.60/155,620.69 = 85,850.60/x
  3. Step 3: Cross multiply
    104,282.60x = 155,620.69 × 85,850.60
  4. Step 4: Simplify right side
    104,282.60x = 13,360,129,608.91
  5. Step 5: Solve for x
    x = 13,360,129,608.91/104,282.60
  6. Step 6: Final answer
    x = 128,114.66

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1.5x scale

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.