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Finding the Fourth Proportional to 156,551.64, 234,635 and 72,194.68

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Solution

The fourth proportional to 156,551.64, 234,635 and 72,194.68 is: 108,203.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,551.64 : 234,635 = 72,194.68 : x
  2. Step 2: Convert to fraction form
    156,551.64/234,635 = 72,194.68/x
  3. Step 3: Cross multiply
    156,551.64x = 234,635 × 72,194.68
  4. Step 4: Simplify right side
    156,551.64x = 16,939,398,741.80
  5. Step 5: Solve for x
    x = 16,939,398,741.80/156,551.64
  6. Step 6: Final answer
    x = 108,203.27

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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.