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Finding the Fourth Proportional to 105,660.87, 145,799.02 and 66,883.53

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Solution

The fourth proportional to 105,660.87, 145,799.02 and 66,883.53 is: 92,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,660.87 : 145,799.02 = 66,883.53 : x
  2. Step 2: Convert to fraction form
    105,660.87/145,799.02 = 66,883.53/x
  3. Step 3: Cross multiply
    105,660.87x = 145,799.02 × 66,883.53
  4. Step 4: Simplify right side
    105,660.87x = 9,751,553,128.14
  5. Step 5: Solve for x
    x = 9,751,553,128.14/105,660.87
  6. Step 6: Final answer
    x = 92,291.05

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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.