Home / 102,778.80-154,211.40-56,065.20

Finding the Fourth Proportional to 102,778.80, 154,211.40 and 56,065.20

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Solution

The fourth proportional to 102,778.80, 154,211.40 and 56,065.20 is: 84,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,778.80 : 154,211.40 = 56,065.20 : x
  2. Step 2: Convert to fraction form
    102,778.80/154,211.40 = 56,065.20/x
  3. Step 3: Cross multiply
    102,778.80x = 154,211.40 × 56,065.20
  4. Step 4: Simplify right side
    102,778.80x = 8,645,892,983.28
  5. Step 5: Solve for x
    x = 8,645,892,983.28/102,778.80
  6. Step 6: Final answer
    x = 84,121.37

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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.