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Finding the Fourth Proportional to 123,654.69, 170,647.34 and 69,938.66

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Solution

The fourth proportional to 123,654.69, 170,647.34 and 69,938.66 is: 96,517.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,654.69 : 170,647.34 = 69,938.66 : x
  2. Step 2: Convert to fraction form
    123,654.69/170,647.34 = 69,938.66/x
  3. Step 3: Cross multiply
    123,654.69x = 170,647.34 × 69,938.66
  4. Step 4: Simplify right side
    123,654.69x = 11,934,845,089.23
  5. Step 5: Solve for x
    x = 11,934,845,089.23/123,654.69
  6. Step 6: Final answer
    x = 96,517.53

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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.