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Finding the Fourth Proportional to 123,221.32, 170,047.88 and 69,495.80

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Solution

The fourth proportional to 123,221.32, 170,047.88 and 69,495.80 is: 95,905.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,221.32 : 170,047.88 = 69,495.80 : x
  2. Step 2: Convert to fraction form
    123,221.32/170,047.88 = 69,495.80/x
  3. Step 3: Cross multiply
    123,221.32x = 170,047.88 × 69,495.80
  4. Step 4: Simplify right side
    123,221.32x = 11,817,613,458.90
  5. Step 5: Solve for x
    x = 11,817,613,458.90/123,221.32
  6. Step 6: Final answer
    x = 95,905.59

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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.