Home / 131,283.27-181,162.94-77,555.43

Finding the Fourth Proportional to 131,283.27, 181,162.94 and 77,555.43

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Solution

The fourth proportional to 131,283.27, 181,162.94 and 77,555.43 is: 107,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,283.27 : 181,162.94 = 77,555.43 : x
  2. Step 2: Convert to fraction form
    131,283.27/181,162.94 = 77,555.43/x
  3. Step 3: Cross multiply
    131,283.27x = 181,162.94 × 77,555.43
  4. Step 4: Simplify right side
    131,283.27x = 14,050,169,323.99
  5. Step 5: Solve for x
    x = 14,050,169,323.99/131,283.27
  6. Step 6: Final answer
    x = 107,021.78

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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.