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Finding the Fourth Proportional to 131,661.32, 197,454.28 and 42,922.56

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Solution

The fourth proportional to 131,661.32, 197,454.28 and 42,922.56 is: 64,371.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,661.32 : 197,454.28 = 42,922.56 : x
  2. Step 2: Convert to fraction form
    131,661.32/197,454.28 = 42,922.56/x
  3. Step 3: Cross multiply
    131,661.32x = 197,454.28 × 42,922.56
  4. Step 4: Simplify right side
    131,661.32x = 8,475,243,180.56
  5. Step 5: Solve for x
    x = 8,475,243,180.56/131,661.32
  6. Step 6: Final answer
    x = 64,371.55

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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.