Home / 131,400.88-197,132.30-42,647.56

Finding the Fourth Proportional to 131,400.88, 197,132.30 and 42,647.56

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Solution

The fourth proportional to 131,400.88, 197,132.30 and 42,647.56 is: 63,981.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,400.88 : 197,132.30 = 42,647.56 : x
  2. Step 2: Convert to fraction form
    131,400.88/197,132.30 = 42,647.56/x
  3. Step 3: Cross multiply
    131,400.88x = 197,132.30 × 42,647.56
  4. Step 4: Simplify right side
    131,400.88x = 8,407,211,046.05
  5. Step 5: Solve for x
    x = 8,407,211,046.05/131,400.88
  6. Step 6: Final answer
    x = 63,981.39

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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.