Home / 107,897.72-149,015.03-82,129.19

Finding the Fourth Proportional to 107,897.72, 149,015.03 and 82,129.19

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Solution

The fourth proportional to 107,897.72, 149,015.03 and 82,129.19 is: 113,426.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,897.72 : 149,015.03 = 82,129.19 : x
  2. Step 2: Convert to fraction form
    107,897.72/149,015.03 = 82,129.19/x
  3. Step 3: Cross multiply
    107,897.72x = 149,015.03 × 82,129.19
  4. Step 4: Simplify right side
    107,897.72x = 12,238,482,556.00
  5. Step 5: Solve for x
    x = 12,238,482,556.00/107,897.72
  6. Step 6: Final answer
    x = 113,426.71

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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.