Home / 142,382.20-196,496.70-81,960.28

Finding the Fourth Proportional to 142,382.20, 196,496.70 and 81,960.28

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Solution

The fourth proportional to 142,382.20, 196,496.70 and 81,960.28 is: 113,110.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,382.20 : 196,496.70 = 81,960.28 : x
  2. Step 2: Convert to fraction form
    142,382.20/196,496.70 = 81,960.28/x
  3. Step 3: Cross multiply
    142,382.20x = 196,496.70 × 81,960.28
  4. Step 4: Simplify right side
    142,382.20x = 16,104,924,551.08
  5. Step 5: Solve for x
    x = 16,104,924,551.08/142,382.20
  6. Step 6: Final answer
    x = 113,110.52

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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.