Home / 189,245.31-261,155.24-103,204.96

Finding the Fourth Proportional to 189,245.31, 261,155.24 and 103,204.96

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Solution

The fourth proportional to 189,245.31, 261,155.24 and 103,204.96 is: 142,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,245.31 : 261,155.24 = 103,204.96 : x
  2. Step 2: Convert to fraction form
    189,245.31/261,155.24 = 103,204.96/x
  3. Step 3: Cross multiply
    189,245.31x = 261,155.24 × 103,204.96
  4. Step 4: Simplify right side
    189,245.31x = 26,952,516,097.99
  5. Step 5: Solve for x
    x = 26,952,516,097.99/189,245.31
  6. Step 6: Final answer
    x = 142,421.05

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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.