Home / 131,870.62-181,936.69-74,501.56

Finding the Fourth Proportional to 131,870.62, 181,936.69 and 74,501.56

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Solution

The fourth proportional to 131,870.62, 181,936.69 and 74,501.56 is: 102,786.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,870.62 : 181,936.69 = 74,501.56 : x
  2. Step 2: Convert to fraction form
    131,870.62/181,936.69 = 74,501.56/x
  3. Step 3: Cross multiply
    131,870.62x = 181,936.69 × 74,501.56
  4. Step 4: Simplify right side
    131,870.62x = 13,554,567,226.24
  5. Step 5: Solve for x
    x = 13,554,567,226.24/131,870.62
  6. Step 6: Final answer
    x = 102,786.86

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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.