Home / 131,291.52-196,997.76-81,430.08

Finding the Fourth Proportional to 131,291.52, 196,997.76 and 81,430.08

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Solution

The fourth proportional to 131,291.52, 196,997.76 and 81,430.08 is: 122,182.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,291.52 : 196,997.76 = 81,430.08 : x
  2. Step 2: Convert to fraction form
    131,291.52/196,997.76 = 81,430.08/x
  3. Step 3: Cross multiply
    131,291.52x = 196,997.76 × 81,430.08
  4. Step 4: Simplify right side
    131,291.52x = 16,041,543,356.62
  5. Step 5: Solve for x
    x = 16,041,543,356.62/131,291.52
  6. Step 6: Final answer
    x = 122,182.63

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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.