Home / 97,930.25-135,185.09-66,142.20

Finding the Fourth Proportional to 97,930.25, 135,185.09 and 66,142.20

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Solution

The fourth proportional to 97,930.25, 135,185.09 and 66,142.20 is: 91,304.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,930.25 : 135,185.09 = 66,142.20 : x
  2. Step 2: Convert to fraction form
    97,930.25/135,185.09 = 66,142.20/x
  3. Step 3: Cross multiply
    97,930.25x = 135,185.09 × 66,142.20
  4. Step 4: Simplify right side
    97,930.25x = 8,941,439,259.80
  5. Step 5: Solve for x
    x = 8,941,439,259.80/97,930.25
  6. Step 6: Final answer
    x = 91,304.16

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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.