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Finding the Fourth Proportional to 125,294.69, 187,493.08 and 108,485.69

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Solution

The fourth proportional to 125,294.69, 187,493.08 and 108,485.69 is: 162,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,294.69 : 187,493.08 = 108,485.69 : x
  2. Step 2: Convert to fraction form
    125,294.69/187,493.08 = 108,485.69/x
  3. Step 3: Cross multiply
    125,294.69x = 187,493.08 × 108,485.69
  4. Step 4: Simplify right side
    125,294.69x = 20,340,315,218.41
  5. Step 5: Solve for x
    x = 20,340,315,218.41/125,294.69
  6. Step 6: Final answer
    x = 162,339.80

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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.