Home / 131,487.40-197,231.10-91,246.60

Finding the Fourth Proportional to 131,487.40, 197,231.10 and 91,246.60

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Solution

The fourth proportional to 131,487.40, 197,231.10 and 91,246.60 is: 136,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,487.40 : 197,231.10 = 91,246.60 : x
  2. Step 2: Convert to fraction form
    131,487.40/197,231.10 = 91,246.60/x
  3. Step 3: Cross multiply
    131,487.40x = 197,231.10 × 91,246.60
  4. Step 4: Simplify right side
    131,487.40x = 17,996,667,289.26
  5. Step 5: Solve for x
    x = 17,996,667,289.26/131,487.40
  6. Step 6: Final answer
    x = 136,869.90

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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.