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Finding the Fourth Proportional to 156,940.41, 216,580.23 and 85,320.71

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Solution

The fourth proportional to 156,940.41, 216,580.23 and 85,320.71 is: 117,743.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,940.41 : 216,580.23 = 85,320.71 : x
  2. Step 2: Convert to fraction form
    156,940.41/216,580.23 = 85,320.71/x
  3. Step 3: Cross multiply
    156,940.41x = 216,580.23 × 85,320.71
  4. Step 4: Simplify right side
    156,940.41x = 18,478,777,912.66
  5. Step 5: Solve for x
    x = 18,478,777,912.66/156,940.41
  6. Step 6: Final answer
    x = 117,743.91

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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.