Home / 107,621.40-161,432.10-68,255.40

Finding the Fourth Proportional to 107,621.40, 161,432.10 and 68,255.40

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Solution

The fourth proportional to 107,621.40, 161,432.10 and 68,255.40 is: 102,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,621.40 : 161,432.10 = 68,255.40 : x
  2. Step 2: Convert to fraction form
    107,621.40/161,432.10 = 68,255.40/x
  3. Step 3: Cross multiply
    107,621.40x = 161,432.10 × 68,255.40
  4. Step 4: Simplify right side
    107,621.40x = 11,018,612,558.34
  5. Step 5: Solve for x
    x = 11,018,612,558.34/107,621.40
  6. Step 6: Final answer
    x = 102,383.10

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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.