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Finding the Fourth Proportional to 156,229.50, 234,384.21 and 45,421.50

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Solution

The fourth proportional to 156,229.50, 234,384.21 and 45,421.50 is: 68,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,229.50 : 234,384.21 = 45,421.50 : x
  2. Step 2: Convert to fraction form
    156,229.50/234,384.21 = 45,421.50/x
  3. Step 3: Cross multiply
    156,229.50x = 234,384.21 × 45,421.50
  4. Step 4: Simplify right side
    156,229.50x = 10,646,082,394.52
  5. Step 5: Solve for x
    x = 10,646,082,394.52/156,229.50
  6. Step 6: Final answer
    x = 68,143.87

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1.5x scale

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.