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Finding the Fourth Proportional to 156,958.36, 216,606.90 and 85,343.29

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Solution

The fourth proportional to 156,958.36, 216,606.90 and 85,343.29 is: 117,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,958.36 : 216,606.90 = 85,343.29 : x
  2. Step 2: Convert to fraction form
    156,958.36/216,606.90 = 85,343.29/x
  3. Step 3: Cross multiply
    156,958.36x = 216,606.90 × 85,343.29
  4. Step 4: Simplify right side
    156,958.36x = 18,485,945,482.70
  5. Step 5: Solve for x
    x = 18,485,945,482.70/156,958.36
  6. Step 6: Final answer
    x = 117,776.11

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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.