Home / 142,236.57-196,278.87-81,797.61

Finding the Fourth Proportional to 142,236.57, 196,278.87 and 81,797.61

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Solution

The fourth proportional to 142,236.57, 196,278.87 and 81,797.61 is: 112,876.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,236.57 : 196,278.87 = 81,797.61 : x
  2. Step 2: Convert to fraction form
    142,236.57/196,278.87 = 81,797.61/x
  3. Step 3: Cross multiply
    142,236.57x = 196,278.87 × 81,797.61
  4. Step 4: Simplify right side
    142,236.57x = 16,055,142,459.50
  5. Step 5: Solve for x
    x = 16,055,142,459.50/142,236.57
  6. Step 6: Final answer
    x = 112,876.33

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1.5x scale

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.