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Finding the Fourth Proportional to 136,304.99, 188,106.39 and 75,871.79

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Solution

The fourth proportional to 136,304.99, 188,106.39 and 75,871.79 is: 104,706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,304.99 : 188,106.39 = 75,871.79 : x
  2. Step 2: Convert to fraction form
    136,304.99/188,106.39 = 75,871.79/x
  3. Step 3: Cross multiply
    136,304.99x = 188,106.39 × 75,871.79
  4. Step 4: Simplify right side
    136,304.99x = 14,271,967,579.21
  5. Step 5: Solve for x
    x = 14,271,967,579.21/136,304.99
  6. Step 6: Final answer
    x = 104,706.13

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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.