Home / 189,890.46-261,989.64-126,239.04

Finding the Fourth Proportional to 189,890.46, 261,989.64 and 126,239.04

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Solution

The fourth proportional to 189,890.46, 261,989.64 and 126,239.04 is: 174,170.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,890.46 : 261,989.64 = 126,239.04 : x
  2. Step 2: Convert to fraction form
    189,890.46/261,989.64 = 126,239.04/x
  3. Step 3: Cross multiply
    189,890.46x = 261,989.64 × 126,239.04
  4. Step 4: Simplify right side
    189,890.46x = 33,073,320,643.55
  5. Step 5: Solve for x
    x = 33,073,320,643.55/189,890.46
  6. Step 6: Final answer
    x = 174,170.52

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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.