Home / 79,226.48-109,102.10-74,161.20

Finding the Fourth Proportional to 79,226.48, 109,102.10 and 74,161.20

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Solution

The fourth proportional to 79,226.48, 109,102.10 and 74,161.20 is: 102,126.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,226.48 : 109,102.10 = 74,161.20 : x
  2. Step 2: Convert to fraction form
    79,226.48/109,102.10 = 74,161.20/x
  3. Step 3: Cross multiply
    79,226.48x = 109,102.10 × 74,161.20
  4. Step 4: Simplify right side
    79,226.48x = 8,091,142,658.52
  5. Step 5: Solve for x
    x = 8,091,142,658.52/79,226.48
  6. Step 6: Final answer
    x = 102,126.75

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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.