Home / 131,786.63-181,865.64-71,357.31

Finding the Fourth Proportional to 131,786.63, 181,865.64 and 71,357.31

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Solution

The fourth proportional to 131,786.63, 181,865.64 and 71,357.31 is: 98,473.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,786.63 : 181,865.64 = 71,357.31 : x
  2. Step 2: Convert to fraction form
    131,786.63/181,865.64 = 71,357.31/x
  3. Step 3: Cross multiply
    131,786.63x = 181,865.64 × 71,357.31
  4. Step 4: Simplify right side
    131,786.63x = 12,977,442,851.83
  5. Step 5: Solve for x
    x = 12,977,442,851.83/131,786.63
  6. Step 6: Final answer
    x = 98,473.14

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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.