Home / 281,130.78-387,922.23-167,929.50

Finding the Fourth Proportional to 281,130.78, 387,922.23 and 167,929.50

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Solution

The fourth proportional to 281,130.78, 387,922.23 and 167,929.50 is: 231,719.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,130.78 : 387,922.23 = 167,929.50 : x
  2. Step 2: Convert to fraction form
    281,130.78/387,922.23 = 167,929.50/x
  3. Step 3: Cross multiply
    281,130.78x = 387,922.23 × 167,929.50
  4. Step 4: Simplify right side
    281,130.78x = 65,143,586,122.79
  5. Step 5: Solve for x
    x = 65,143,586,122.79/281,130.78
  6. Step 6: Final answer
    x = 231,719.86

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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.