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Finding the Fourth Proportional to 84,243.70, 126,226.64 and 75,562.66

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Solution

The fourth proportional to 84,243.70, 126,226.64 and 75,562.66 is: 113,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,243.70 : 126,226.64 = 75,562.66 : x
  2. Step 2: Convert to fraction form
    84,243.70/126,226.64 = 75,562.66/x
  3. Step 3: Cross multiply
    84,243.70x = 126,226.64 × 75,562.66
  4. Step 4: Simplify right side
    84,243.70x = 9,538,020,681.26
  5. Step 5: Solve for x
    x = 9,538,020,681.26/84,243.70
  6. Step 6: Final answer
    x = 113,219.39

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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.