Home / 76,131.13-114,188.49-19,976.89

Finding the Fourth Proportional to 76,131.13, 114,188.49 and 19,976.89

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Solution

The fourth proportional to 76,131.13, 114,188.49 and 19,976.89 is: 29,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,131.13 : 114,188.49 = 19,976.89 : x
  2. Step 2: Convert to fraction form
    76,131.13/114,188.49 = 19,976.89/x
  3. Step 3: Cross multiply
    76,131.13x = 114,188.49 × 19,976.89
  4. Step 4: Simplify right side
    76,131.13x = 2,281,130,904.00
  5. Step 5: Solve for x
    x = 2,281,130,904.00/76,131.13
  6. Step 6: Final answer
    x = 29,963.18

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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.