Home / 142,811.80-197,104.68-82,371.64

Finding the Fourth Proportional to 142,811.80, 197,104.68 and 82,371.64

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Solution

The fourth proportional to 142,811.80, 197,104.68 and 82,371.64 is: 113,686.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,811.80 : 197,104.68 = 82,371.64 : x
  2. Step 2: Convert to fraction form
    142,811.80/197,104.68 = 82,371.64/x
  3. Step 3: Cross multiply
    142,811.80x = 197,104.68 × 82,371.64
  4. Step 4: Simplify right side
    142,811.80x = 16,235,835,743.28
  5. Step 5: Solve for x
    x = 16,235,835,743.28/142,811.80
  6. Step 6: Final answer
    x = 113,686.93

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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.