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Finding the Fourth Proportional to 125,897.90, 188,846.85 and 69,910.70

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Solution

The fourth proportional to 125,897.90, 188,846.85 and 69,910.70 is: 104,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,897.90 : 188,846.85 = 69,910.70 : x
  2. Step 2: Convert to fraction form
    125,897.90/188,846.85 = 69,910.70/x
  3. Step 3: Cross multiply
    125,897.90x = 188,846.85 × 69,910.70
  4. Step 4: Simplify right side
    125,897.90x = 13,202,415,476.30
  5. Step 5: Solve for x
    x = 13,202,415,476.30/125,897.90
  6. Step 6: Final answer
    x = 104,866.05

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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.