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Finding the Fourth Proportional to 136,767.88, 205,160.46 and 57,871.72

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Solution

The fourth proportional to 136,767.88, 205,160.46 and 57,871.72 is: 86,811.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,767.88 : 205,160.46 = 57,871.72 : x
  2. Step 2: Convert to fraction form
    136,767.88/205,160.46 = 57,871.72/x
  3. Step 3: Cross multiply
    136,767.88x = 205,160.46 × 57,871.72
  4. Step 4: Simplify right side
    136,767.88x = 11,872,988,696.19
  5. Step 5: Solve for x
    x = 11,872,988,696.19/136,767.88
  6. Step 6: Final answer
    x = 86,811.24

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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.