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Finding the Fourth Proportional to 123,483.43, 170,406.89 and 66,894.94

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Solution

The fourth proportional to 123,483.43, 170,406.89 and 66,894.94 is: 92,314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,483.43 : 170,406.89 = 66,894.94 : x
  2. Step 2: Convert to fraction form
    123,483.43/170,406.89 = 66,894.94/x
  3. Step 3: Cross multiply
    123,483.43x = 170,406.89 × 66,894.94
  4. Step 4: Simplify right side
    123,483.43x = 11,399,358,347.66
  5. Step 5: Solve for x
    x = 11,399,358,347.66/123,483.43
  6. Step 6: Final answer
    x = 92,314.88

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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.