Home / 120,641.25-180,777.27-64,489.32

Finding the Fourth Proportional to 120,641.25, 180,777.27 and 64,489.32

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Solution

The fourth proportional to 120,641.25, 180,777.27 and 64,489.32 is: 96,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,641.25 : 180,777.27 = 64,489.32 : x
  2. Step 2: Convert to fraction form
    120,641.25/180,777.27 = 64,489.32/x
  3. Step 3: Cross multiply
    120,641.25x = 180,777.27 × 64,489.32
  4. Step 4: Simplify right side
    120,641.25x = 11,658,203,213.76
  5. Step 5: Solve for x
    x = 11,658,203,213.76/120,641.25
  6. Step 6: Final answer
    x = 96,635.30

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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.