Home / 136,039.36-187,705.16-79,425.04

Finding the Fourth Proportional to 136,039.36, 187,705.16 and 79,425.04

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Solution

The fourth proportional to 136,039.36, 187,705.16 and 79,425.04 is: 109,589.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,039.36 : 187,705.16 = 79,425.04 : x
  2. Step 2: Convert to fraction form
    136,039.36/187,705.16 = 79,425.04/x
  3. Step 3: Cross multiply
    136,039.36x = 187,705.16 × 79,425.04
  4. Step 4: Simplify right side
    136,039.36x = 14,908,489,841.21
  5. Step 5: Solve for x
    x = 14,908,489,841.21/136,039.36
  6. Step 6: Final answer
    x = 109,589.53

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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.