Home / 103,206.40-142,292.96-66,843.60

Finding the Fourth Proportional to 103,206.40, 142,292.96 and 66,843.60

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Solution

The fourth proportional to 103,206.40, 142,292.96 and 66,843.60 is: 92,158.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,206.40 : 142,292.96 = 66,843.60 : x
  2. Step 2: Convert to fraction form
    103,206.40/142,292.96 = 66,843.60/x
  3. Step 3: Cross multiply
    103,206.40x = 142,292.96 × 66,843.60
  4. Step 4: Simplify right side
    103,206.40x = 9,511,373,701.06
  5. Step 5: Solve for x
    x = 9,511,373,701.06/103,206.40
  6. Step 6: Final answer
    x = 92,158.76

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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.