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Finding the Fourth Proportional to 120,079.36, 180,128.04 and 35,832.88

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Solution

The fourth proportional to 120,079.36, 180,128.04 and 35,832.88 is: 53,752.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,079.36 : 180,128.04 = 35,832.88 : x
  2. Step 2: Convert to fraction form
    120,079.36/180,128.04 = 35,832.88/x
  3. Step 3: Cross multiply
    120,079.36x = 180,128.04 × 35,832.88
  4. Step 4: Simplify right side
    120,079.36x = 6,454,506,441.96
  5. Step 5: Solve for x
    x = 6,454,506,441.96/120,079.36
  6. Step 6: Final answer
    x = 53,752.01

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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.