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Finding the Fourth Proportional to 98,131.80, 135,285.83 and 66,250.20

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Solution

The fourth proportional to 98,131.80, 135,285.83 and 66,250.20 is: 91,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,131.80 : 135,285.83 = 66,250.20 : x
  2. Step 2: Convert to fraction form
    98,131.80/135,285.83 = 66,250.20/x
  3. Step 3: Cross multiply
    98,131.80x = 135,285.83 × 66,250.20
  4. Step 4: Simplify right side
    98,131.80x = 8,962,713,294.67
  5. Step 5: Solve for x
    x = 8,962,713,294.67/98,131.80
  6. Step 6: Final answer
    x = 91,333.42

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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.