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Finding the Fourth Proportional to 156,854.72, 235,149.80 and 68,041.32

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Solution

The fourth proportional to 156,854.72, 235,149.80 and 68,041.32 is: 102,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,854.72 : 235,149.80 = 68,041.32 : x
  2. Step 2: Convert to fraction form
    156,854.72/235,149.80 = 68,041.32/x
  3. Step 3: Cross multiply
    156,854.72x = 235,149.80 × 68,041.32
  4. Step 4: Simplify right side
    156,854.72x = 15,999,902,789.74
  5. Step 5: Solve for x
    x = 15,999,902,789.74/156,854.72
  6. Step 6: Final answer
    x = 102,004.60

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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.