Home / 131,438.20-196,865.70-108,110.20

Finding the Fourth Proportional to 131,438.20, 196,865.70 and 108,110.20

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Solution

The fourth proportional to 131,438.20, 196,865.70 and 108,110.20 is: 161,925.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,438.20 : 196,865.70 = 108,110.20 : x
  2. Step 2: Convert to fraction form
    131,438.20/196,865.70 = 108,110.20/x
  3. Step 3: Cross multiply
    131,438.20x = 196,865.70 × 108,110.20
  4. Step 4: Simplify right side
    131,438.20x = 21,283,190,200.14
  5. Step 5: Solve for x
    x = 21,283,190,200.14/131,438.20
  6. Step 6: Final answer
    x = 161,925.45

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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.