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Finding the Fourth Proportional to 123,323.91, 170,187.14 and 66,735.28

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Solution

The fourth proportional to 123,323.91, 170,187.14 and 66,735.28 is: 92,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,323.91 : 170,187.14 = 66,735.28 : x
  2. Step 2: Convert to fraction form
    123,323.91/170,187.14 = 66,735.28/x
  3. Step 3: Cross multiply
    123,323.91x = 170,187.14 × 66,735.28
  4. Step 4: Simplify right side
    123,323.91x = 11,357,486,819.87
  5. Step 5: Solve for x
    x = 11,357,486,819.87/123,323.91
  6. Step 6: Final answer
    x = 92,094.77

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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.