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Finding the Fourth Proportional to 123,364.68, 170,247.40 and 75,608.80

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Solution

The fourth proportional to 123,364.68, 170,247.40 and 75,608.80 is: 104,342.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,364.68 : 170,247.40 = 75,608.80 : x
  2. Step 2: Convert to fraction form
    123,364.68/170,247.40 = 75,608.80/x
  3. Step 3: Cross multiply
    123,364.68x = 170,247.40 × 75,608.80
  4. Step 4: Simplify right side
    123,364.68x = 12,872,201,617.12
  5. Step 5: Solve for x
    x = 12,872,201,617.12/123,364.68
  6. Step 6: Final answer
    x = 104,342.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.