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Finding the Fourth Proportional to 156,859, 235,156.20 and 68,045.62

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Solution

The fourth proportional to 156,859, 235,156.20 and 68,045.62 is: 102,011.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,859 : 235,156.20 = 68,045.62 : x
  2. Step 2: Convert to fraction form
    156,859/235,156.20 = 68,045.62/x
  3. Step 3: Cross multiply
    156,859x = 235,156.20 × 68,045.62
  4. Step 4: Simplify right side
    156,859x = 16,001,349,425.84
  5. Step 5: Solve for x
    x = 16,001,349,425.84/156,859
  6. Step 6: Final answer
    x = 102,011.04

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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.