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Finding the Fourth Proportional to 123,938.80, 171,035.12 and 67,350.16

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Solution

The fourth proportional to 123,938.80, 171,035.12 and 67,350.16 is: 92,942.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,938.80 : 171,035.12 = 67,350.16 : x
  2. Step 2: Convert to fraction form
    123,938.80/171,035.12 = 67,350.16/x
  3. Step 3: Cross multiply
    123,938.80x = 171,035.12 × 67,350.16
  4. Step 4: Simplify right side
    123,938.80x = 11,519,242,697.62
  5. Step 5: Solve for x
    x = 11,519,242,697.62/123,938.80
  6. Step 6: Final answer
    x = 92,942.99

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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.