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Finding the Fourth Proportional to 123,417.70, 170,317.05 and 66,829.30

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Solution

The fourth proportional to 123,417.70, 170,317.05 and 66,829.30 is: 92,224.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,417.70 : 170,317.05 = 66,829.30 : x
  2. Step 2: Convert to fraction form
    123,417.70/170,317.05 = 66,829.30/x
  3. Step 3: Cross multiply
    123,417.70x = 170,317.05 × 66,829.30
  4. Step 4: Simplify right side
    123,417.70x = 11,382,169,229.57
  5. Step 5: Solve for x
    x = 11,382,169,229.57/123,417.70
  6. Step 6: Final answer
    x = 92,224.77

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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.