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Finding the Fourth Proportional to 131,424.56, 181,365.96 and 71,808.56

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Solution

The fourth proportional to 131,424.56, 181,365.96 and 71,808.56 is: 99,095.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,424.56 : 181,365.96 = 71,808.56 : x
  2. Step 2: Convert to fraction form
    131,424.56/181,365.96 = 71,808.56/x
  3. Step 3: Cross multiply
    131,424.56x = 181,365.96 × 71,808.56
  4. Step 4: Simplify right side
    131,424.56x = 13,023,628,420.62
  5. Step 5: Solve for x
    x = 13,023,628,420.62/131,424.56
  6. Step 6: Final answer
    x = 99,095.85

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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.