Home / 131,826.98-197,738.82-31,988

Finding the Fourth Proportional to 131,826.98, 197,738.82 and 31,988

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Solution

The fourth proportional to 131,826.98, 197,738.82 and 31,988 is: 47,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,826.98 : 197,738.82 = 31,988 : x
  2. Step 2: Convert to fraction form
    131,826.98/197,738.82 = 31,988/x
  3. Step 3: Cross multiply
    131,826.98x = 197,738.82 × 31,988
  4. Step 4: Simplify right side
    131,826.98x = 6,325,269,374.16
  5. Step 5: Solve for x
    x = 6,325,269,374.16/131,826.98
  6. Step 6: Final answer
    x = 47,981.60

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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.