Home / 109,176.80-162,638.45-105,872.80

Finding the Fourth Proportional to 109,176.80, 162,638.45 and 105,872.80

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Solution

The fourth proportional to 109,176.80, 162,638.45 and 105,872.80 is: 157,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,176.80 : 162,638.45 = 105,872.80 : x
  2. Step 2: Convert to fraction form
    109,176.80/162,638.45 = 105,872.80/x
  3. Step 3: Cross multiply
    109,176.80x = 162,638.45 × 105,872.80
  4. Step 4: Simplify right side
    109,176.80x = 17,218,988,089.16
  5. Step 5: Solve for x
    x = 17,218,988,089.16/109,176.80
  6. Step 6: Final answer
    x = 157,716.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.