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Finding the Fourth Proportional to 136,483.26, 188,363.25 and 79,894.50

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Solution

The fourth proportional to 136,483.26, 188,363.25 and 79,894.50 is: 110,263.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,483.26 : 188,363.25 = 79,894.50 : x
  2. Step 2: Convert to fraction form
    136,483.26/188,363.25 = 79,894.50/x
  3. Step 3: Cross multiply
    136,483.26x = 188,363.25 × 79,894.50
  4. Step 4: Simplify right side
    136,483.26x = 15,049,187,677.13
  5. Step 5: Solve for x
    x = 15,049,187,677.13/136,483.26
  6. Step 6: Final answer
    x = 110,263.98

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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.