Home / 112,165.20-168,393.60-90,003.60

Finding the Fourth Proportional to 112,165.20, 168,393.60 and 90,003.60

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Solution

The fourth proportional to 112,165.20, 168,393.60 and 90,003.60 is: 135,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,165.20 : 168,393.60 = 90,003.60 : x
  2. Step 2: Convert to fraction form
    112,165.20/168,393.60 = 90,003.60/x
  3. Step 3: Cross multiply
    112,165.20x = 168,393.60 × 90,003.60
  4. Step 4: Simplify right side
    112,165.20x = 15,156,030,216.96
  5. Step 5: Solve for x
    x = 15,156,030,216.96/112,165.20
  6. Step 6: Final answer
    x = 135,122.39

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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.