Home / 189,709.24-261,795.52-103,666.31

Finding the Fourth Proportional to 189,709.24, 261,795.52 and 103,666.31

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Solution

The fourth proportional to 189,709.24, 261,795.52 and 103,666.31 is: 143,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,709.24 : 261,795.52 = 103,666.31 : x
  2. Step 2: Convert to fraction form
    189,709.24/261,795.52 = 103,666.31/x
  3. Step 3: Cross multiply
    189,709.24x = 261,795.52 × 103,666.31
  4. Step 4: Simplify right side
    189,709.24x = 27,139,375,532.93
  5. Step 5: Solve for x
    x = 27,139,375,532.93/189,709.24
  6. Step 6: Final answer
    x = 143,057.74

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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.