Home / 105,917.78-146,169.10-58,172.16

Finding the Fourth Proportional to 105,917.78, 146,169.10 and 58,172.16

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Solution

The fourth proportional to 105,917.78, 146,169.10 and 58,172.16 is: 80,278.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,917.78 : 146,169.10 = 58,172.16 : x
  2. Step 2: Convert to fraction form
    105,917.78/146,169.10 = 58,172.16/x
  3. Step 3: Cross multiply
    105,917.78x = 146,169.10 × 58,172.16
  4. Step 4: Simplify right side
    105,917.78x = 8,502,972,272.26
  5. Step 5: Solve for x
    x = 8,502,972,272.26/105,917.78
  6. Step 6: Final answer
    x = 80,278.99

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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.