Home / 120,742.18-166,679.94-72,367.18

Finding the Fourth Proportional to 120,742.18, 166,679.94 and 72,367.18

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Solution

The fourth proportional to 120,742.18, 166,679.94 and 72,367.18 is: 99,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,742.18 : 166,679.94 = 72,367.18 : x
  2. Step 2: Convert to fraction form
    120,742.18/166,679.94 = 72,367.18/x
  3. Step 3: Cross multiply
    120,742.18x = 166,679.94 × 72,367.18
  4. Step 4: Simplify right side
    120,742.18x = 12,062,157,220.37
  5. Step 5: Solve for x
    x = 12,062,157,220.37/120,742.18
  6. Step 6: Final answer
    x = 99,900.11

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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.