Home / 131,819.04-197,726.88-31,980

Finding the Fourth Proportional to 131,819.04, 197,726.88 and 31,980

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Solution

The fourth proportional to 131,819.04, 197,726.88 and 31,980 is: 47,969.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,819.04 : 197,726.88 = 31,980 : x
  2. Step 2: Convert to fraction form
    131,819.04/197,726.88 = 31,980/x
  3. Step 3: Cross multiply
    131,819.04x = 197,726.88 × 31,980
  4. Step 4: Simplify right side
    131,819.04x = 6,323,305,622.40
  5. Step 5: Solve for x
    x = 6,323,305,622.40/131,819.04
  6. Step 6: Final answer
    x = 47,969.59

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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.