Home / 131,378.28-197,067.28-42,631.77

Finding the Fourth Proportional to 131,378.28, 197,067.28 and 42,631.77

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Solution

The fourth proportional to 131,378.28, 197,067.28 and 42,631.77 is: 63,947.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,378.28 : 197,067.28 = 42,631.77 : x
  2. Step 2: Convert to fraction form
    131,378.28/197,067.28 = 42,631.77/x
  3. Step 3: Cross multiply
    131,378.28x = 197,067.28 × 42,631.77
  4. Step 4: Simplify right side
    131,378.28x = 8,401,326,955.49
  5. Step 5: Solve for x
    x = 8,401,326,955.49/131,378.28
  6. Step 6: Final answer
    x = 63,947.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.