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Finding the Fourth Proportional to 123,202.81, 170,020.79 and 69,488.88

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Solution

The fourth proportional to 123,202.81, 170,020.79 and 69,488.88 is: 95,895.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,202.81 : 170,020.79 = 69,488.88 : x
  2. Step 2: Convert to fraction form
    123,202.81/170,020.79 = 69,488.88/x
  3. Step 3: Cross multiply
    123,202.81x = 170,020.79 × 69,488.88
  4. Step 4: Simplify right side
    123,202.81x = 11,814,554,273.82
  5. Step 5: Solve for x
    x = 11,814,554,273.82/123,202.81
  6. Step 6: Final answer
    x = 95,895.17

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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.