Home / 156,929.87-216,564.63-85,310.03

Finding the Fourth Proportional to 156,929.87, 216,564.63 and 85,310.03

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Solution

The fourth proportional to 156,929.87, 216,564.63 and 85,310.03 is: 117,728.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.87 : 216,564.63 = 85,310.03 : x
  2. Step 2: Convert to fraction form
    156,929.87/216,564.63 = 85,310.03/x
  3. Step 3: Cross multiply
    156,929.87x = 216,564.63 × 85,310.03
  4. Step 4: Simplify right side
    156,929.87x = 18,475,135,082.24
  5. Step 5: Solve for x
    x = 18,475,135,082.24/156,929.87
  6. Step 6: Final answer
    x = 117,728.61

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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.