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Finding the Fourth Proportional to 131,415.56, 181,353.54 and 71,799.56

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Solution

The fourth proportional to 131,415.56, 181,353.54 and 71,799.56 is: 99,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,415.56 : 181,353.54 = 71,799.56 : x
  2. Step 2: Convert to fraction form
    131,415.56/181,353.54 = 71,799.56/x
  3. Step 3: Cross multiply
    131,415.56x = 181,353.54 × 71,799.56
  4. Step 4: Simplify right side
    131,415.56x = 13,021,104,376.44
  5. Step 5: Solve for x
    x = 13,021,104,376.44/131,415.56
  6. Step 6: Final answer
    x = 99,083.43

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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.