Home / 107,147.26-147,659.32-78,475.69

Finding the Fourth Proportional to 107,147.26, 147,659.32 and 78,475.69

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Solution

The fourth proportional to 107,147.26, 147,659.32 and 78,475.69 is: 108,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,147.26 : 147,659.32 = 78,475.69 : x
  2. Step 2: Convert to fraction form
    107,147.26/147,659.32 = 78,475.69/x
  3. Step 3: Cross multiply
    107,147.26x = 147,659.32 × 78,475.69
  4. Step 4: Simplify right side
    107,147.26x = 11,587,667,021.93
  5. Step 5: Solve for x
    x = 11,587,667,021.93/107,147.26
  6. Step 6: Final answer
    x = 108,147.11

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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.