Home / 102,356.20-153,522.78-76,100.20

Finding the Fourth Proportional to 102,356.20, 153,522.78 and 76,100.20

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Solution

The fourth proportional to 102,356.20, 153,522.78 and 76,100.20 is: 114,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,356.20 : 153,522.78 = 76,100.20 : x
  2. Step 2: Convert to fraction form
    102,356.20/153,522.78 = 76,100.20/x
  3. Step 3: Cross multiply
    102,356.20x = 153,522.78 × 76,100.20
  4. Step 4: Simplify right side
    102,356.20x = 11,683,114,262.56
  5. Step 5: Solve for x
    x = 11,683,114,262.56/102,356.20
  6. Step 6: Final answer
    x = 114,141.74

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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.