Home / 189,844.31-261,988.94-103,808.68

Finding the Fourth Proportional to 189,844.31, 261,988.94 and 103,808.68

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Solution

The fourth proportional to 189,844.31, 261,988.94 and 103,808.68 is: 143,258.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,844.31 : 261,988.94 = 103,808.68 : x
  2. Step 2: Convert to fraction form
    189,844.31/261,988.94 = 103,808.68/x
  3. Step 3: Cross multiply
    189,844.31x = 261,988.94 × 103,808.68
  4. Step 4: Simplify right side
    189,844.31x = 27,196,726,036.00
  5. Step 5: Solve for x
    x = 27,196,726,036.00/189,844.31
  6. Step 6: Final answer
    x = 143,258.05

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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.