Home / 103,135.10-154,678.08-58,175.78

Finding the Fourth Proportional to 103,135.10, 154,678.08 and 58,175.78

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Solution

The fourth proportional to 103,135.10, 154,678.08 and 58,175.78 is: 87,249.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,135.10 : 154,678.08 = 58,175.78 : x
  2. Step 2: Convert to fraction form
    103,135.10/154,678.08 = 58,175.78/x
  3. Step 3: Cross multiply
    103,135.10x = 154,678.08 × 58,175.78
  4. Step 4: Simplify right side
    103,135.10x = 8,998,517,952.90
  5. Step 5: Solve for x
    x = 8,998,517,952.90/103,135.10
  6. Step 6: Final answer
    x = 87,249.81

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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.