Home / 131,980.40-182,052.29-78,229.43

Finding the Fourth Proportional to 131,980.40, 182,052.29 and 78,229.43

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Solution

The fourth proportional to 131,980.40, 182,052.29 and 78,229.43 is: 107,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,980.40 : 182,052.29 = 78,229.43 : x
  2. Step 2: Convert to fraction form
    131,980.40/182,052.29 = 78,229.43/x
  3. Step 3: Cross multiply
    131,980.40x = 182,052.29 × 78,229.43
  4. Step 4: Simplify right side
    131,980.40x = 14,241,846,162.21
  5. Step 5: Solve for x
    x = 14,241,846,162.21/131,980.40
  6. Step 6: Final answer
    x = 107,908.80

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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.