Home / 109,080.20-163,620.30-90,648.20

Finding the Fourth Proportional to 109,080.20, 163,620.30 and 90,648.20

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Solution

The fourth proportional to 109,080.20, 163,620.30 and 90,648.20 is: 135,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,080.20 : 163,620.30 = 90,648.20 : x
  2. Step 2: Convert to fraction form
    109,080.20/163,620.30 = 90,648.20/x
  3. Step 3: Cross multiply
    109,080.20x = 163,620.30 × 90,648.20
  4. Step 4: Simplify right side
    109,080.20x = 14,831,885,678.46
  5. Step 5: Solve for x
    x = 14,831,885,678.46/109,080.20
  6. Step 6: Final answer
    x = 135,972.30

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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.