Home / 107,840.10-161,760.15-81,401.70

Finding the Fourth Proportional to 107,840.10, 161,760.15 and 81,401.70

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Solution

The fourth proportional to 107,840.10, 161,760.15 and 81,401.70 is: 122,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,840.10 : 161,760.15 = 81,401.70 : x
  2. Step 2: Convert to fraction form
    107,840.10/161,760.15 = 81,401.70/x
  3. Step 3: Cross multiply
    107,840.10x = 161,760.15 × 81,401.70
  4. Step 4: Simplify right side
    107,840.10x = 13,167,551,202.26
  5. Step 5: Solve for x
    x = 13,167,551,202.26/107,840.10
  6. Step 6: Final answer
    x = 122,102.55

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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.