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Finding the Fourth Proportional to 156,851.64, 216,450.90 and 85,229.28

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Solution

The fourth proportional to 156,851.64, 216,450.90 and 85,229.28 is: 117,614.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,851.64 : 216,450.90 = 85,229.28 : x
  2. Step 2: Convert to fraction form
    156,851.64/216,450.90 = 85,229.28/x
  3. Step 3: Cross multiply
    156,851.64x = 216,450.90 × 85,229.28
  4. Step 4: Simplify right side
    156,851.64x = 18,447,954,362.35
  5. Step 5: Solve for x
    x = 18,447,954,362.35/156,851.64
  6. Step 6: Final answer
    x = 117,614.04

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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.