Home / 131,786.18-181,864.40-71,356.33

Finding the Fourth Proportional to 131,786.18, 181,864.40 and 71,356.33

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Solution

The fourth proportional to 131,786.18, 181,864.40 and 71,356.33 is: 98,471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,786.18 : 181,864.40 = 71,356.33 : x
  2. Step 2: Convert to fraction form
    131,786.18/181,864.40 = 71,356.33/x
  3. Step 3: Cross multiply
    131,786.18x = 181,864.40 × 71,356.33
  4. Step 4: Simplify right side
    131,786.18x = 12,977,176,141.65
  5. Step 5: Solve for x
    x = 12,977,176,141.65/131,786.18
  6. Step 6: Final answer
    x = 98,471.45

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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.