Home / 156,721.14-234,876.36-72,470.60

Finding the Fourth Proportional to 156,721.14, 234,876.36 and 72,470.60

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Solution

The fourth proportional to 156,721.14, 234,876.36 and 72,470.60 is: 108,610.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,721.14 : 234,876.36 = 72,470.60 : x
  2. Step 2: Convert to fraction form
    156,721.14/234,876.36 = 72,470.60/x
  3. Step 3: Cross multiply
    156,721.14x = 234,876.36 × 72,470.60
  4. Step 4: Simplify right side
    156,721.14x = 17,021,630,735.02
  5. Step 5: Solve for x
    x = 17,021,630,735.02/156,721.14
  6. Step 6: Final answer
    x = 108,610.94

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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.