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Finding the Fourth Proportional to 123,568.75, 170,065.20 and 101,885.05

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Solution

The fourth proportional to 123,568.75, 170,065.20 and 101,885.05 is: 140,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,568.75 : 170,065.20 = 101,885.05 : x
  2. Step 2: Convert to fraction form
    123,568.75/170,065.20 = 101,885.05/x
  3. Step 3: Cross multiply
    123,568.75x = 170,065.20 × 101,885.05
  4. Step 4: Simplify right side
    123,568.75x = 17,327,101,405.26
  5. Step 5: Solve for x
    x = 17,327,101,405.26/123,568.75
  6. Step 6: Final answer
    x = 140,222.36

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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.