Home / 131,438.70-197,158.05-108,110.70

Finding the Fourth Proportional to 131,438.70, 197,158.05 and 108,110.70

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Solution

The fourth proportional to 131,438.70, 197,158.05 and 108,110.70 is: 162,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,438.70 : 197,158.05 = 108,110.70 : x
  2. Step 2: Convert to fraction form
    131,438.70/197,158.05 = 108,110.70/x
  3. Step 3: Cross multiply
    131,438.70x = 197,158.05 × 108,110.70
  4. Step 4: Simplify right side
    131,438.70x = 21,314,894,796.14
  5. Step 5: Solve for x
    x = 21,314,894,796.14/131,438.70
  6. Step 6: Final answer
    x = 162,166.05

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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.