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Finding the Fourth Proportional to 156,028.60, 234,123.90 and 72,922.60

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Solution

The fourth proportional to 156,028.60, 234,123.90 and 72,922.60 is: 109,421.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,028.60 : 234,123.90 = 72,922.60 : x
  2. Step 2: Convert to fraction form
    156,028.60/234,123.90 = 72,922.60/x
  3. Step 3: Cross multiply
    156,028.60x = 234,123.90 × 72,922.60
  4. Step 4: Simplify right side
    156,028.60x = 17,072,923,510.14
  5. Step 5: Solve for x
    x = 17,072,923,510.14/156,028.60
  6. Step 6: Final answer
    x = 109,421.76

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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.