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Finding the Fourth Proportional to 123,347.70, 170,220.54 and 66,759.07

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Solution

The fourth proportional to 123,347.70, 170,220.54 and 66,759.07 is: 92,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,347.70 : 170,220.54 = 66,759.07 : x
  2. Step 2: Convert to fraction form
    123,347.70/170,220.54 = 66,759.07/x
  3. Step 3: Cross multiply
    123,347.70x = 170,220.54 × 66,759.07
  4. Step 4: Simplify right side
    123,347.70x = 11,363,764,945.30
  5. Step 5: Solve for x
    x = 11,363,764,945.30/123,347.70
  6. Step 6: Final answer
    x = 92,127.90

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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.