Home / 131,639.94-197,480.40-42,872.79

Finding the Fourth Proportional to 131,639.94, 197,480.40 and 42,872.79

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Solution

The fourth proportional to 131,639.94, 197,480.40 and 42,872.79 is: 64,315.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,639.94 : 197,480.40 = 42,872.79 : x
  2. Step 2: Convert to fraction form
    131,639.94/197,480.40 = 42,872.79/x
  3. Step 3: Cross multiply
    131,639.94x = 197,480.40 × 42,872.79
  4. Step 4: Simplify right side
    131,639.94x = 8,466,535,718.32
  5. Step 5: Solve for x
    x = 8,466,535,718.32/131,639.94
  6. Step 6: Final answer
    x = 64,315.86

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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.