Home / 131,717.21-181,770.28-71,287.83

Finding the Fourth Proportional to 131,717.21, 181,770.28 and 71,287.83

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Solution

The fourth proportional to 131,717.21, 181,770.28 and 71,287.83 is: 98,377.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,717.21 : 181,770.28 = 71,287.83 : x
  2. Step 2: Convert to fraction form
    131,717.21/181,770.28 = 71,287.83/x
  3. Step 3: Cross multiply
    131,717.21x = 181,770.28 × 71,287.83
  4. Step 4: Simplify right side
    131,717.21x = 12,958,008,641.47
  5. Step 5: Solve for x
    x = 12,958,008,641.47/131,717.21
  6. Step 6: Final answer
    x = 98,377.49

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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.