Home / 142,745.06-197,080.62-91,780.68

Finding the Fourth Proportional to 142,745.06, 197,080.62 and 91,780.68

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Solution

The fourth proportional to 142,745.06, 197,080.62 and 91,780.68 is: 126,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,745.06 : 197,080.62 = 91,780.68 : x
  2. Step 2: Convert to fraction form
    142,745.06/197,080.62 = 91,780.68/x
  3. Step 3: Cross multiply
    142,745.06x = 197,080.62 × 91,780.68
  4. Step 4: Simplify right side
    142,745.06x = 18,088,193,318.42
  5. Step 5: Solve for x
    x = 18,088,193,318.42/142,745.06
  6. Step 6: Final answer
    x = 126,716.77

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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.