Home / 105,391.20-158,133.60-55,459.20

Finding the Fourth Proportional to 105,391.20, 158,133.60 and 55,459.20

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Solution

The fourth proportional to 105,391.20, 158,133.60 and 55,459.20 is: 83,213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,391.20 : 158,133.60 = 55,459.20 : x
  2. Step 2: Convert to fraction form
    105,391.20/158,133.60 = 55,459.20/x
  3. Step 3: Cross multiply
    105,391.20x = 158,133.60 × 55,459.20
  4. Step 4: Simplify right side
    105,391.20x = 8,769,962,949.12
  5. Step 5: Solve for x
    x = 8,769,962,949.12/105,391.20
  6. Step 6: Final answer
    x = 83,213.43

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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.