Home / 131,171.72-196,768.40-42,439.48

Finding the Fourth Proportional to 131,171.72, 196,768.40 and 42,439.48

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Solution

The fourth proportional to 131,171.72, 196,768.40 and 42,439.48 is: 63,662.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,171.72 : 196,768.40 = 42,439.48 : x
  2. Step 2: Convert to fraction form
    131,171.72/196,768.40 = 42,439.48/x
  3. Step 3: Cross multiply
    131,171.72x = 196,768.40 × 42,439.48
  4. Step 4: Simplify right side
    131,171.72x = 8,350,748,576.43
  5. Step 5: Solve for x
    x = 8,350,748,576.43/131,171.72
  6. Step 6: Final answer
    x = 63,662.72

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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.