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Finding the Fourth Proportional to 123,199.68, 170,013.60 and 69,484.80

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Solution

The fourth proportional to 123,199.68, 170,013.60 and 69,484.80 is: 95,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,199.68 : 170,013.60 = 69,484.80 : x
  2. Step 2: Convert to fraction form
    123,199.68/170,013.60 = 69,484.80/x
  3. Step 3: Cross multiply
    123,199.68x = 170,013.60 × 69,484.80
  4. Step 4: Simplify right side
    123,199.68x = 11,813,360,993.28
  5. Step 5: Solve for x
    x = 11,813,360,993.28/123,199.68
  6. Step 6: Final answer
    x = 95,887.92

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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.