Home / 120,355.49-166,096.28-72,607.81

Finding the Fourth Proportional to 120,355.49, 166,096.28 and 72,607.81

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Solution

The fourth proportional to 120,355.49, 166,096.28 and 72,607.81 is: 100,202.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,355.49 : 166,096.28 = 72,607.81 : x
  2. Step 2: Convert to fraction form
    120,355.49/166,096.28 = 72,607.81/x
  3. Step 3: Cross multiply
    120,355.49x = 166,096.28 × 72,607.81
  4. Step 4: Simplify right side
    120,355.49x = 12,059,887,139.95
  5. Step 5: Solve for x
    x = 12,059,887,139.95/120,355.49
  6. Step 6: Final answer
    x = 100,202.22

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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.