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Finding the Fourth Proportional to 131,796.30, 181,878.99 and 71,367.42

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Solution

The fourth proportional to 131,796.30, 181,878.99 and 71,367.42 is: 98,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,796.30 : 181,878.99 = 71,367.42 : x
  2. Step 2: Convert to fraction form
    131,796.30/181,878.99 = 71,367.42/x
  3. Step 3: Cross multiply
    131,796.30x = 181,878.99 × 71,367.42
  4. Step 4: Simplify right side
    131,796.30x = 12,980,234,268.51
  5. Step 5: Solve for x
    x = 12,980,234,268.51/131,796.30
  6. Step 6: Final answer
    x = 98,487.09

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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.