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Finding the Fourth Proportional to 136,792.49, 188,776.82 and 85,807.37

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Solution

The fourth proportional to 136,792.49, 188,776.82 and 85,807.37 is: 118,416.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,792.49 : 188,776.82 = 85,807.37 : x
  2. Step 2: Convert to fraction form
    136,792.49/188,776.82 = 85,807.37/x
  3. Step 3: Cross multiply
    136,792.49x = 188,776.82 × 85,807.37
  4. Step 4: Simplify right side
    136,792.49x = 16,198,443,127.62
  5. Step 5: Solve for x
    x = 16,198,443,127.62/136,792.49
  6. Step 6: Final answer
    x = 118,416.18

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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.