Home / 154,331.08-212,929.66-100,596.52

Finding the Fourth Proportional to 154,331.08, 212,929.66 and 100,596.52

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Solution

The fourth proportional to 154,331.08, 212,929.66 and 100,596.52 is: 138,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,331.08 : 212,929.66 = 100,596.52 : x
  2. Step 2: Convert to fraction form
    154,331.08/212,929.66 = 100,596.52/x
  3. Step 3: Cross multiply
    154,331.08x = 212,929.66 × 100,596.52
  4. Step 4: Simplify right side
    154,331.08x = 21,419,982,800.78
  5. Step 5: Solve for x
    x = 21,419,982,800.78/154,331.08
  6. Step 6: Final answer
    x = 138,792.41

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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.