Home / 136,106.71-187,799.64-79,507.15

Finding the Fourth Proportional to 136,106.71, 187,799.64 and 79,507.15

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Solution

The fourth proportional to 136,106.71, 187,799.64 and 79,507.15 is: 109,703.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,106.71 : 187,799.64 = 79,507.15 : x
  2. Step 2: Convert to fraction form
    136,106.71/187,799.64 = 79,507.15/x
  3. Step 3: Cross multiply
    136,106.71x = 187,799.64 × 79,507.15
  4. Step 4: Simplify right side
    136,106.71x = 14,931,414,147.43
  5. Step 5: Solve for x
    x = 14,931,414,147.43/136,106.71
  6. Step 6: Final answer
    x = 109,703.73

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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.