Home / 154,403.36-231,648.78-79,578.08

Finding the Fourth Proportional to 154,403.36, 231,648.78 and 79,578.08

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Solution

The fourth proportional to 154,403.36, 231,648.78 and 79,578.08 is: 119,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,403.36 : 231,648.78 = 79,578.08 : x
  2. Step 2: Convert to fraction form
    154,403.36/231,648.78 = 79,578.08/x
  3. Step 3: Cross multiply
    154,403.36x = 231,648.78 × 79,578.08
  4. Step 4: Simplify right side
    154,403.36x = 18,434,165,146.74
  5. Step 5: Solve for x
    x = 18,434,165,146.74/154,403.36
  6. Step 6: Final answer
    x = 119,389.66

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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.