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Finding the Fourth Proportional to 156,967.70, 235,581.15 and 72,857.30

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Solution

The fourth proportional to 156,967.70, 235,581.15 and 72,857.30 is: 109,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,967.70 : 235,581.15 = 72,857.30 : x
  2. Step 2: Convert to fraction form
    156,967.70/235,581.15 = 72,857.30/x
  3. Step 3: Cross multiply
    156,967.70x = 235,581.15 × 72,857.30
  4. Step 4: Simplify right side
    156,967.70x = 17,163,806,519.90
  5. Step 5: Solve for x
    x = 17,163,806,519.90/156,967.70
  6. Step 6: Final answer
    x = 109,346.10

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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.