Home / 142,611.98-196,742.73-85,991.90

Finding the Fourth Proportional to 142,611.98, 196,742.73 and 85,991.90

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Solution

The fourth proportional to 142,611.98, 196,742.73 and 85,991.90 is: 118,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,611.98 : 196,742.73 = 85,991.90 : x
  2. Step 2: Convert to fraction form
    142,611.98/196,742.73 = 85,991.90/x
  3. Step 3: Cross multiply
    142,611.98x = 196,742.73 × 85,991.90
  4. Step 4: Simplify right side
    142,611.98x = 16,918,281,163.89
  5. Step 5: Solve for x
    x = 16,918,281,163.89/142,611.98
  6. Step 6: Final answer
    x = 118,631.56

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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.