Home / 131,821.74-197,731.89-31,981.95

Finding the Fourth Proportional to 131,821.74, 197,731.89 and 31,981.95

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Solution

The fourth proportional to 131,821.74, 197,731.89 and 31,981.95 is: 47,972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,821.74 : 197,731.89 = 31,981.95 : x
  2. Step 2: Convert to fraction form
    131,821.74/197,731.89 = 31,981.95/x
  3. Step 3: Cross multiply
    131,821.74x = 197,731.89 × 31,981.95
  4. Step 4: Simplify right side
    131,821.74x = 6,323,851,419.39
  5. Step 5: Solve for x
    x = 6,323,851,419.39/131,821.74
  6. Step 6: Final answer
    x = 47,972.75

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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.