Home / 106,540.20-159,983.10-77,164.20

Finding the Fourth Proportional to 106,540.20, 159,983.10 and 77,164.20

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Solution

The fourth proportional to 106,540.20, 159,983.10 and 77,164.20 is: 115,871.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,540.20 : 159,983.10 = 77,164.20 : x
  2. Step 2: Convert to fraction form
    106,540.20/159,983.10 = 77,164.20/x
  3. Step 3: Cross multiply
    106,540.20x = 159,983.10 × 77,164.20
  4. Step 4: Simplify right side
    106,540.20x = 12,344,967,925.02
  5. Step 5: Solve for x
    x = 12,344,967,925.02/106,540.20
  6. Step 6: Final answer
    x = 115,871.45

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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.