Home / 107,820.78-161,722.53-28,934.70

Finding the Fourth Proportional to 107,820.78, 161,722.53 and 28,934.70

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Solution

The fourth proportional to 107,820.78, 161,722.53 and 28,934.70 is: 43,399.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,820.78 : 161,722.53 = 28,934.70 : x
  2. Step 2: Convert to fraction form
    107,820.78/161,722.53 = 28,934.70/x
  3. Step 3: Cross multiply
    107,820.78x = 161,722.53 × 28,934.70
  4. Step 4: Simplify right side
    107,820.78x = 4,679,392,888.79
  5. Step 5: Solve for x
    x = 4,679,392,888.79/107,820.78
  6. Step 6: Final answer
    x = 43,399.73

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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.