Home / 120,756.12-181,207.89-76,321.68

Finding the Fourth Proportional to 120,756.12, 181,207.89 and 76,321.68

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Solution

The fourth proportional to 120,756.12, 181,207.89 and 76,321.68 is: 114,529.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,756.12 : 181,207.89 = 76,321.68 : x
  2. Step 2: Convert to fraction form
    120,756.12/181,207.89 = 76,321.68/x
  3. Step 3: Cross multiply
    120,756.12x = 181,207.89 × 76,321.68
  4. Step 4: Simplify right side
    120,756.12x = 13,830,090,594.06
  5. Step 5: Solve for x
    x = 13,830,090,594.06/120,756.12
  6. Step 6: Final answer
    x = 114,529.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.