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Finding the Fourth Proportional to 156,735.80, 235,103.70 and 38,408.30

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Solution

The fourth proportional to 156,735.80, 235,103.70 and 38,408.30 is: 57,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,735.80 : 235,103.70 = 38,408.30 : x
  2. Step 2: Convert to fraction form
    156,735.80/235,103.70 = 38,408.30/x
  3. Step 3: Cross multiply
    156,735.80x = 235,103.70 × 38,408.30
  4. Step 4: Simplify right side
    156,735.80x = 9,029,933,440.71
  5. Step 5: Solve for x
    x = 9,029,933,440.71/156,735.80
  6. Step 6: Final answer
    x = 57,612.45

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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.