Home / 156,972.54-216,619.04-85,351.92

Finding the Fourth Proportional to 156,972.54, 216,619.04 and 85,351.92

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Solution

The fourth proportional to 156,972.54, 216,619.04 and 85,351.92 is: 117,783.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.54 : 216,619.04 = 85,351.92 : x
  2. Step 2: Convert to fraction form
    156,972.54/216,619.04 = 85,351.92/x
  3. Step 3: Cross multiply
    156,972.54x = 216,619.04 × 85,351.92
  4. Step 4: Simplify right side
    156,972.54x = 18,488,850,972.56
  5. Step 5: Solve for x
    x = 18,488,850,972.56/156,972.54
  6. Step 6: Final answer
    x = 117,783.98

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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.