Home / 105,633.78-158,344.05-66,218.58

Finding the Fourth Proportional to 105,633.78, 158,344.05 and 66,218.58

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Solution

The fourth proportional to 105,633.78, 158,344.05 and 66,218.58 is: 99,261.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,633.78 : 158,344.05 = 66,218.58 : x
  2. Step 2: Convert to fraction form
    105,633.78/158,344.05 = 66,218.58/x
  3. Step 3: Cross multiply
    105,633.78x = 158,344.05 × 66,218.58
  4. Step 4: Simplify right side
    105,633.78x = 10,485,318,142.45
  5. Step 5: Solve for x
    x = 10,485,318,142.45/105,633.78
  6. Step 6: Final answer
    x = 99,261.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.