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Finding the Fourth Proportional to 101,575.68, 140,098.84 and 65,738.04

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Solution

The fourth proportional to 101,575.68, 140,098.84 and 65,738.04 is: 90,669.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,575.68 : 140,098.84 = 65,738.04 : x
  2. Step 2: Convert to fraction form
    101,575.68/140,098.84 = 65,738.04/x
  3. Step 3: Cross multiply
    101,575.68x = 140,098.84 × 65,738.04
  4. Step 4: Simplify right side
    101,575.68x = 9,209,823,147.87
  5. Step 5: Solve for x
    x = 9,209,823,147.87/101,575.68
  6. Step 6: Final answer
    x = 90,669.57

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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.