Home / 86,961.74-131,034.92-71,512.81

Finding the Fourth Proportional to 86,961.74, 131,034.92 and 71,512.81

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Solution

The fourth proportional to 86,961.74, 131,034.92 and 71,512.81 is: 107,756.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,961.74 : 131,034.92 = 71,512.81 : x
  2. Step 2: Convert to fraction form
    86,961.74/131,034.92 = 71,512.81/x
  3. Step 3: Cross multiply
    86,961.74x = 131,034.92 × 71,512.81
  4. Step 4: Simplify right side
    86,961.74x = 9,370,674,652.17
  5. Step 5: Solve for x
    x = 9,370,674,652.17/86,961.74
  6. Step 6: Final answer
    x = 107,756.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.