Home / 109,399.01-163,833.98-90,540.21

Finding the Fourth Proportional to 109,399.01, 163,833.98 and 90,540.21

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Solution

The fourth proportional to 109,399.01, 163,833.98 and 90,540.21 is: 135,591.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,399.01 : 163,833.98 = 90,540.21 : x
  2. Step 2: Convert to fraction form
    109,399.01/163,833.98 = 90,540.21/x
  3. Step 3: Cross multiply
    109,399.01x = 163,833.98 × 90,540.21
  4. Step 4: Simplify right side
    109,399.01x = 14,833,563,116.01
  5. Step 5: Solve for x
    x = 14,833,563,116.01/109,399.01
  6. Step 6: Final answer
    x = 135,591.39

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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.