Home / 123,565.50-170,538.60-78,247.62

Finding the Fourth Proportional to 123,565.50, 170,538.60 and 78,247.62

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Solution

The fourth proportional to 123,565.50, 170,538.60 and 78,247.62 is: 107,993.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,565.50 : 170,538.60 = 78,247.62 : x
  2. Step 2: Convert to fraction form
    123,565.50/170,538.60 = 78,247.62/x
  3. Step 3: Cross multiply
    123,565.50x = 170,538.60 × 78,247.62
  4. Step 4: Simplify right side
    123,565.50x = 13,344,239,568.13
  5. Step 5: Solve for x
    x = 13,344,239,568.13/123,565.50
  6. Step 6: Final answer
    x = 107,993.25

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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.