Home / 120,475.15-166,259.99-72,719.17

Finding the Fourth Proportional to 120,475.15, 166,259.99 and 72,719.17

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Solution

The fourth proportional to 120,475.15, 166,259.99 and 72,719.17 is: 100,355.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,475.15 : 166,259.99 = 72,719.17 : x
  2. Step 2: Convert to fraction form
    120,475.15/166,259.99 = 72,719.17/x
  3. Step 3: Cross multiply
    120,475.15x = 166,259.99 × 72,719.17
  4. Step 4: Simplify right side
    120,475.15x = 12,090,288,243.16
  5. Step 5: Solve for x
    x = 12,090,288,243.16/120,475.15
  6. Step 6: Final answer
    x = 100,355.04

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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.