Home / 76,143.54-114,207.06-19,989.28

Finding the Fourth Proportional to 76,143.54, 114,207.06 and 19,989.28

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Solution

The fourth proportional to 76,143.54, 114,207.06 and 19,989.28 is: 29,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,143.54 : 114,207.06 = 19,989.28 : x
  2. Step 2: Convert to fraction form
    76,143.54/114,207.06 = 19,989.28/x
  3. Step 3: Cross multiply
    76,143.54x = 114,207.06 × 19,989.28
  4. Step 4: Simplify right side
    76,143.54x = 2,282,917,118.04
  5. Step 5: Solve for x
    x = 2,282,917,118.04/76,143.54
  6. Step 6: Final answer
    x = 29,981.76

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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.