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Finding the Fourth Proportional to 129,957.10, 195,000.45 and 73,840.30

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Solution

The fourth proportional to 129,957.10, 195,000.45 and 73,840.30 is: 110,797.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,957.10 : 195,000.45 = 73,840.30 : x
  2. Step 2: Convert to fraction form
    129,957.10/195,000.45 = 73,840.30/x
  3. Step 3: Cross multiply
    129,957.10x = 195,000.45 × 73,840.30
  4. Step 4: Simplify right side
    129,957.10x = 14,398,891,728.14
  5. Step 5: Solve for x
    x = 14,398,891,728.14/129,957.10
  6. Step 6: Final answer
    x = 110,797.27

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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.