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Finding the Fourth Proportional to 131,318.99, 197,040 and 64,722.82

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Solution

The fourth proportional to 131,318.99, 197,040 and 64,722.82 is: 97,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,318.99 : 197,040 = 64,722.82 : x
  2. Step 2: Convert to fraction form
    131,318.99/197,040 = 64,722.82/x
  3. Step 3: Cross multiply
    131,318.99x = 197,040 × 64,722.82
  4. Step 4: Simplify right side
    131,318.99x = 12,752,984,452.80
  5. Step 5: Solve for x
    x = 12,752,984,452.80/131,318.99
  6. Step 6: Final answer
    x = 97,114.55

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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.