Home / 131,421.34-181,361.26-70,991.96

Finding the Fourth Proportional to 131,421.34, 181,361.26 and 70,991.96

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Solution

The fourth proportional to 131,421.34, 181,361.26 and 70,991.96 is: 97,968.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.34 : 181,361.26 = 70,991.96 : x
  2. Step 2: Convert to fraction form
    131,421.34/181,361.26 = 70,991.96/x
  3. Step 3: Cross multiply
    131,421.34x = 181,361.26 × 70,991.96
  4. Step 4: Simplify right side
    131,421.34x = 12,875,191,517.56
  5. Step 5: Solve for x
    x = 12,875,191,517.56/131,421.34
  6. Step 6: Final answer
    x = 97,968.81

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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.