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Finding the Fourth Proportional to 123,259.28, 170,097.84 and 69,555.68

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Solution

The fourth proportional to 123,259.28, 170,097.84 and 69,555.68 is: 95,986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,259.28 : 170,097.84 = 69,555.68 : x
  2. Step 2: Convert to fraction form
    123,259.28/170,097.84 = 69,555.68/x
  3. Step 3: Cross multiply
    123,259.28x = 170,097.84 × 69,555.68
  4. Step 4: Simplify right side
    123,259.28x = 11,831,270,927.73
  5. Step 5: Solve for x
    x = 11,831,270,927.73/123,259.28
  6. Step 6: Final answer
    x = 95,986.86

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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.