Home / 120,466.32-180,556.11-90,786.30

Finding the Fourth Proportional to 120,466.32, 180,556.11 and 90,786.30

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Solution

The fourth proportional to 120,466.32, 180,556.11 and 90,786.30 is: 136,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,466.32 : 180,556.11 = 90,786.30 : x
  2. Step 2: Convert to fraction form
    120,466.32/180,556.11 = 90,786.30/x
  3. Step 3: Cross multiply
    120,466.32x = 180,556.11 × 90,786.30
  4. Step 4: Simplify right side
    120,466.32x = 16,392,021,169.29
  5. Step 5: Solve for x
    x = 16,392,021,169.29/120,466.32
  6. Step 6: Final answer
    x = 136,071.40

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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.