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Finding the Fourth Proportional to 126,759.67, 189,866.14 and 119,307.03

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Solution

The fourth proportional to 126,759.67, 189,866.14 and 119,307.03 is: 178,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,759.67 : 189,866.14 = 119,307.03 : x
  2. Step 2: Convert to fraction form
    126,759.67/189,866.14 = 119,307.03/x
  3. Step 3: Cross multiply
    126,759.67x = 189,866.14 × 119,307.03
  4. Step 4: Simplify right side
    126,759.67x = 22,652,364,962.70
  5. Step 5: Solve for x
    x = 22,652,364,962.70/126,759.67
  6. Step 6: Final answer
    x = 178,703.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.