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Finding the Fourth Proportional to 123,617.51, 170,595.53 and 69,910.56

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Solution

The fourth proportional to 123,617.51, 170,595.53 and 69,910.56 is: 96,478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,617.51 : 170,595.53 = 69,910.56 : x
  2. Step 2: Convert to fraction form
    123,617.51/170,595.53 = 69,910.56/x
  3. Step 3: Cross multiply
    123,617.51x = 170,595.53 × 69,910.56
  4. Step 4: Simplify right side
    123,617.51x = 11,926,429,035.80
  5. Step 5: Solve for x
    x = 11,926,429,035.80/123,617.51
  6. Step 6: Final answer
    x = 96,478.48

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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.