Home / 131,620.48-197,430.73-31,780.58

Finding the Fourth Proportional to 131,620.48, 197,430.73 and 31,780.58

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Solution

The fourth proportional to 131,620.48, 197,430.73 and 31,780.58 is: 47,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,620.48 : 197,430.73 = 31,780.58 : x
  2. Step 2: Convert to fraction form
    131,620.48/197,430.73 = 31,780.58/x
  3. Step 3: Cross multiply
    131,620.48x = 197,430.73 × 31,780.58
  4. Step 4: Simplify right side
    131,620.48x = 6,274,462,042.62
  5. Step 5: Solve for x
    x = 6,274,462,042.62/131,620.48
  6. Step 6: Final answer
    x = 47,670.87

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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.