Home / 131,786.07-181,865.13-71,357.46

Finding the Fourth Proportional to 131,786.07, 181,865.13 and 71,357.46

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Solution

The fourth proportional to 131,786.07, 181,865.13 and 71,357.46 is: 98,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,786.07 : 181,865.13 = 71,357.46 : x
  2. Step 2: Convert to fraction form
    131,786.07/181,865.13 = 71,357.46/x
  3. Step 3: Cross multiply
    131,786.07x = 181,865.13 × 71,357.46
  4. Step 4: Simplify right side
    131,786.07x = 12,977,433,739.37
  5. Step 5: Solve for x
    x = 12,977,433,739.37/131,786.07
  6. Step 6: Final answer
    x = 98,473.49

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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.