Home / 131,789.66-181,822.67-80,783.96

Finding the Fourth Proportional to 131,789.66, 181,822.67 and 80,783.96

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Solution

The fourth proportional to 131,789.66, 181,822.67 and 80,783.96 is: 111,453.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,789.66 : 181,822.67 = 80,783.96 : x
  2. Step 2: Convert to fraction form
    131,789.66/181,822.67 = 80,783.96/x
  3. Step 3: Cross multiply
    131,789.66x = 181,822.67 × 80,783.96
  4. Step 4: Simplify right side
    131,789.66x = 14,688,353,987.34
  5. Step 5: Solve for x
    x = 14,688,353,987.34/131,789.66
  6. Step 6: Final answer
    x = 111,453.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.