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Finding the Fourth Proportional to 123,460.72, 170,374.53 and 69,745.66

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Solution

The fourth proportional to 123,460.72, 170,374.53 and 69,745.66 is: 96,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,460.72 : 170,374.53 = 69,745.66 : x
  2. Step 2: Convert to fraction form
    123,460.72/170,374.53 = 69,745.66/x
  3. Step 3: Cross multiply
    123,460.72x = 170,374.53 × 69,745.66
  4. Step 4: Simplify right side
    123,460.72x = 11,882,884,042.04
  5. Step 5: Solve for x
    x = 11,882,884,042.04/123,460.72
  6. Step 6: Final answer
    x = 96,248.30

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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.