Home / 112,254.38-168,742.44-90,311.48

Finding the Fourth Proportional to 112,254.38, 168,742.44 and 90,311.48

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Solution

The fourth proportional to 112,254.38, 168,742.44 and 90,311.48 is: 135,757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,254.38 : 168,742.44 = 90,311.48 : x
  2. Step 2: Convert to fraction form
    112,254.38/168,742.44 = 90,311.48/x
  3. Step 3: Cross multiply
    112,254.38x = 168,742.44 × 90,311.48
  4. Step 4: Simplify right side
    112,254.38x = 15,239,379,495.21
  5. Step 5: Solve for x
    x = 15,239,379,495.21/112,254.38
  6. Step 6: Final answer
    x = 135,757.55

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1.5x scale

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.