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Finding the Fourth Proportional to 123,122.42, 169,898.76 and 69,420.64

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Solution

The fourth proportional to 123,122.42, 169,898.76 and 69,420.64 is: 95,794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,122.42 : 169,898.76 = 69,420.64 : x
  2. Step 2: Convert to fraction form
    123,122.42/169,898.76 = 69,420.64/x
  3. Step 3: Cross multiply
    123,122.42x = 169,898.76 × 69,420.64
  4. Step 4: Simplify right side
    123,122.42x = 11,794,480,654.41
  5. Step 5: Solve for x
    x = 11,794,480,654.41/123,122.42
  6. Step 6: Final answer
    x = 95,794.74

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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.