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Finding the Fourth Proportional to 123,202.90, 170,019.95 and 69,487.80

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Solution

The fourth proportional to 123,202.90, 170,019.95 and 69,487.80 is: 95,893.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,202.90 : 170,019.95 = 69,487.80 : x
  2. Step 2: Convert to fraction form
    123,202.90/170,019.95 = 69,487.80/x
  3. Step 3: Cross multiply
    123,202.90x = 170,019.95 × 69,487.80
  4. Step 4: Simplify right side
    123,202.90x = 11,814,311,431.51
  5. Step 5: Solve for x
    x = 11,814,311,431.51/123,202.90
  6. Step 6: Final answer
    x = 95,893.13

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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.