Home / 112,255.38-168,743.94-90,312.48

Finding the Fourth Proportional to 112,255.38, 168,743.94 and 90,312.48

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Solution

The fourth proportional to 112,255.38, 168,743.94 and 90,312.48 is: 135,759.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,255.38 : 168,743.94 = 90,312.48 : x
  2. Step 2: Convert to fraction form
    112,255.38/168,743.94 = 90,312.48/x
  3. Step 3: Cross multiply
    112,255.38x = 168,743.94 × 90,312.48
  4. Step 4: Simplify right side
    112,255.38x = 15,239,683,706.37
  5. Step 5: Solve for x
    x = 15,239,683,706.37/112,255.38
  6. Step 6: Final answer
    x = 135,759.05

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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.