Home / 107,380.80-161,071.20-54,783.45

Finding the Fourth Proportional to 107,380.80, 161,071.20 and 54,783.45

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Solution

The fourth proportional to 107,380.80, 161,071.20 and 54,783.45 is: 82,175.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,380.80 : 161,071.20 = 54,783.45 : x
  2. Step 2: Convert to fraction form
    107,380.80/161,071.20 = 54,783.45/x
  3. Step 3: Cross multiply
    107,380.80x = 161,071.20 × 54,783.45
  4. Step 4: Simplify right side
    107,380.80x = 8,824,036,031.64
  5. Step 5: Solve for x
    x = 8,824,036,031.64/107,380.80
  6. Step 6: Final answer
    x = 82,175.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.