Home / 120,122.20-180,291.98-64,009.72

Finding the Fourth Proportional to 120,122.20, 180,291.98 and 64,009.72

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Solution

The fourth proportional to 120,122.20, 180,291.98 and 64,009.72 is: 96,072.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,122.20 : 180,291.98 = 64,009.72 : x
  2. Step 2: Convert to fraction form
    120,122.20/180,291.98 = 64,009.72/x
  3. Step 3: Cross multiply
    120,122.20x = 180,291.98 × 64,009.72
  4. Step 4: Simplify right side
    120,122.20x = 11,540,438,867.34
  5. Step 5: Solve for x
    x = 11,540,438,867.34/120,122.20
  6. Step 6: Final answer
    x = 96,072.49

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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.