Home / 189,455.56-261,447.40-103,414.19

Finding the Fourth Proportional to 189,455.56, 261,447.40 and 103,414.19

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Solution

The fourth proportional to 189,455.56, 261,447.40 and 103,414.19 is: 142,710.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,455.56 : 261,447.40 = 103,414.19 : x
  2. Step 2: Convert to fraction form
    189,455.56/261,447.40 = 103,414.19/x
  3. Step 3: Cross multiply
    189,455.56x = 261,447.40 × 103,414.19
  4. Step 4: Simplify right side
    189,455.56x = 27,037,369,338.93
  5. Step 5: Solve for x
    x = 27,037,369,338.93/189,455.56
  6. Step 6: Final answer
    x = 142,710.88

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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.