Home / 142,393.28-196,497.90-81,955.54

Finding the Fourth Proportional to 142,393.28, 196,497.90 and 81,955.54

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Solution

The fourth proportional to 142,393.28, 196,497.90 and 81,955.54 is: 113,095.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,393.28 : 196,497.90 = 81,955.54 : x
  2. Step 2: Convert to fraction form
    142,393.28/196,497.90 = 81,955.54/x
  3. Step 3: Cross multiply
    142,393.28x = 196,497.90 × 81,955.54
  4. Step 4: Simplify right side
    142,393.28x = 16,104,091,503.37
  5. Step 5: Solve for x
    x = 16,104,091,503.37/142,393.28
  6. Step 6: Final answer
    x = 113,095.87

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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.