Home / 156,540.70-234,940.65-72,430.30

Finding the Fourth Proportional to 156,540.70, 234,940.65 and 72,430.30

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Solution

The fourth proportional to 156,540.70, 234,940.65 and 72,430.30 is: 108,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,540.70 : 234,940.65 = 72,430.30 : x
  2. Step 2: Convert to fraction form
    156,540.70/234,940.65 = 72,430.30/x
  3. Step 3: Cross multiply
    156,540.70x = 234,940.65 × 72,430.30
  4. Step 4: Simplify right side
    156,540.70x = 17,016,821,761.70
  5. Step 5: Solve for x
    x = 17,016,821,761.70/156,540.70
  6. Step 6: Final answer
    x = 108,705.42

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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.