Home / 156,929.05-216,559.54-85,310.88

Finding the Fourth Proportional to 156,929.05, 216,559.54 and 85,310.88

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Solution

The fourth proportional to 156,929.05, 216,559.54 and 85,310.88 is: 117,727.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.05 : 216,559.54 = 85,310.88 : x
  2. Step 2: Convert to fraction form
    156,929.05/216,559.54 = 85,310.88/x
  3. Step 3: Cross multiply
    156,929.05x = 216,559.54 × 85,310.88
  4. Step 4: Simplify right side
    156,929.05x = 18,474,883,420.44
  5. Step 5: Solve for x
    x = 18,474,883,420.44/156,929.05
  6. Step 6: Final answer
    x = 117,727.62

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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.