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Finding the Fourth Proportional to 156,937.38, 235,479.06 and 72,650.40

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Solution

The fourth proportional to 156,937.38, 235,479.06 and 72,650.40 is: 109,009.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,937.38 : 235,479.06 = 72,650.40 : x
  2. Step 2: Convert to fraction form
    156,937.38/235,479.06 = 72,650.40/x
  3. Step 3: Cross multiply
    156,937.38x = 235,479.06 × 72,650.40
  4. Step 4: Simplify right side
    156,937.38x = 17,107,647,900.62
  5. Step 5: Solve for x
    x = 17,107,647,900.62/156,937.38
  6. Step 6: Final answer
    x = 109,009.39

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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.