Home / 131,772.30-181,814.67-75,201.90

Finding the Fourth Proportional to 131,772.30, 181,814.67 and 75,201.90

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Solution

The fourth proportional to 131,772.30, 181,814.67 and 75,201.90 is: 103,760.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,772.30 : 181,814.67 = 75,201.90 : x
  2. Step 2: Convert to fraction form
    131,772.30/181,814.67 = 75,201.90/x
  3. Step 3: Cross multiply
    131,772.30x = 181,814.67 × 75,201.90
  4. Step 4: Simplify right side
    131,772.30x = 13,672,808,631.87
  5. Step 5: Solve for x
    x = 13,672,808,631.87/131,772.30
  6. Step 6: Final answer
    x = 103,760.87

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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.