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Finding the Fourth Proportional to 156,866.72, 235,336.99 and 51,685.69

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Solution

The fourth proportional to 156,866.72, 235,336.99 and 51,685.69 is: 77,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,866.72 : 235,336.99 = 51,685.69 : x
  2. Step 2: Convert to fraction form
    156,866.72/235,336.99 = 51,685.69/x
  3. Step 3: Cross multiply
    156,866.72x = 235,336.99 × 51,685.69
  4. Step 4: Simplify right side
    156,866.72x = 12,163,553,993.12
  5. Step 5: Solve for x
    x = 12,163,553,993.12/156,866.72
  6. Step 6: Final answer
    x = 77,540.69

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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.