Home / 158,427.38-218,629.79-86,810.12

Finding the Fourth Proportional to 158,427.38, 218,629.79 and 86,810.12

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Solution

The fourth proportional to 158,427.38, 218,629.79 and 86,810.12 is: 119,797.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,427.38 : 218,629.79 = 86,810.12 : x
  2. Step 2: Convert to fraction form
    158,427.38/218,629.79 = 86,810.12/x
  3. Step 3: Cross multiply
    158,427.38x = 218,629.79 × 86,810.12
  4. Step 4: Simplify right side
    158,427.38x = 18,979,276,778.28
  5. Step 5: Solve for x
    x = 18,979,276,778.28/158,427.38
  6. Step 6: Final answer
    x = 119,797.96

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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.