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Finding the Fourth Proportional to 136,389.83, 188,195.91 and 75,960.28

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Solution

The fourth proportional to 136,389.83, 188,195.91 and 75,960.28 is: 104,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,389.83 : 188,195.91 = 75,960.28 : x
  2. Step 2: Convert to fraction form
    136,389.83/188,195.91 = 75,960.28/x
  3. Step 3: Cross multiply
    136,389.83x = 188,195.91 × 75,960.28
  4. Step 4: Simplify right side
    136,389.83x = 14,295,413,968.85
  5. Step 5: Solve for x
    x = 14,295,413,968.85/136,389.83
  6. Step 6: Final answer
    x = 104,812.91

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1.5x scale

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.