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Finding the Fourth Proportional to 156,729.69, 216,289.53 and 88,744.86

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Solution

The fourth proportional to 156,729.69, 216,289.53 and 88,744.86 is: 122,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,729.69 : 216,289.53 = 88,744.86 : x
  2. Step 2: Convert to fraction form
    156,729.69/216,289.53 = 88,744.86/x
  3. Step 3: Cross multiply
    156,729.69x = 216,289.53 × 88,744.86
  4. Step 4: Simplify right side
    156,729.69x = 19,194,584,059.32
  5. Step 5: Solve for x
    x = 19,194,584,059.32/156,729.69
  6. Step 6: Final answer
    x = 122,469.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.