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Finding the Fourth Proportional to 123,643.68, 170,628.12 and 67,054.92

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Solution

The fourth proportional to 123,643.68, 170,628.12 and 67,054.92 is: 92,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,643.68 : 170,628.12 = 67,054.92 : x
  2. Step 2: Convert to fraction form
    123,643.68/170,628.12 = 67,054.92/x
  3. Step 3: Cross multiply
    123,643.68x = 170,628.12 × 67,054.92
  4. Step 4: Simplify right side
    123,643.68x = 11,441,454,936.35
  5. Step 5: Solve for x
    x = 11,441,454,936.35/123,643.68
  6. Step 6: Final answer
    x = 92,535.70

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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.