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Finding the Fourth Proportional to 123,513.69, 170,449.01 and 66,925.07

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Solution

The fourth proportional to 123,513.69, 170,449.01 and 66,925.07 is: 92,356.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,513.69 : 170,449.01 = 66,925.07 : x
  2. Step 2: Convert to fraction form
    123,513.69/170,449.01 = 66,925.07/x
  3. Step 3: Cross multiply
    123,513.69x = 170,449.01 × 66,925.07
  4. Step 4: Simplify right side
    123,513.69x = 11,407,311,240.75
  5. Step 5: Solve for x
    x = 11,407,311,240.75/123,513.69
  6. Step 6: Final answer
    x = 92,356.65

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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.