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Finding the Fourth Proportional to 120,168.72, 180,254.52 and 72,794.16

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Solution

The fourth proportional to 120,168.72, 180,254.52 and 72,794.16 is: 109,192.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,168.72 : 180,254.52 = 72,794.16 : x
  2. Step 2: Convert to fraction form
    120,168.72/180,254.52 = 72,794.16/x
  3. Step 3: Cross multiply
    120,168.72x = 180,254.52 × 72,794.16
  4. Step 4: Simplify right side
    120,168.72x = 13,121,476,369.60
  5. Step 5: Solve for x
    x = 13,121,476,369.60/120,168.72
  6. Step 6: Final answer
    x = 109,192.11

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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.