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Finding the Fourth Proportional to 123,417.76, 170,317.32 and 66,829.14

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Solution

The fourth proportional to 123,417.76, 170,317.32 and 66,829.14 is: 92,224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,417.76 : 170,317.32 = 66,829.14 : x
  2. Step 2: Convert to fraction form
    123,417.76/170,317.32 = 66,829.14/x
  3. Step 3: Cross multiply
    123,417.76x = 170,317.32 × 66,829.14
  4. Step 4: Simplify right side
    123,417.76x = 11,382,160,022.70
  5. Step 5: Solve for x
    x = 11,382,160,022.70/123,417.76
  6. Step 6: Final answer
    x = 92,224.65

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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.