Home / 131,412.76-181,286.19-86,070.79

Finding the Fourth Proportional to 131,412.76, 181,286.19 and 86,070.79

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Solution

The fourth proportional to 131,412.76, 181,286.19 and 86,070.79 is: 118,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,412.76 : 181,286.19 = 86,070.79 : x
  2. Step 2: Convert to fraction form
    131,412.76/181,286.19 = 86,070.79/x
  3. Step 3: Cross multiply
    131,412.76x = 181,286.19 × 86,070.79
  4. Step 4: Simplify right side
    131,412.76x = 15,603,445,589.39
  5. Step 5: Solve for x
    x = 15,603,445,589.39/131,412.76
  6. Step 6: Final answer
    x = 118,736.15

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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.