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Finding the Fourth Proportional to 123,511.59, 170,427.60 and 69,796.17

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Solution

The fourth proportional to 123,511.59, 170,427.60 and 69,796.17 is: 96,308.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,511.59 : 170,427.60 = 69,796.17 : x
  2. Step 2: Convert to fraction form
    123,511.59/170,427.60 = 69,796.17/x
  3. Step 3: Cross multiply
    123,511.59x = 170,427.60 × 69,796.17
  4. Step 4: Simplify right side
    123,511.59x = 11,895,193,742.29
  5. Step 5: Solve for x
    x = 11,895,193,742.29/123,511.59
  6. Step 6: Final answer
    x = 96,308.32

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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.