Home / 105,839.85-146,081.64-63,422.99

Finding the Fourth Proportional to 105,839.85, 146,081.64 and 63,422.99

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Solution

The fourth proportional to 105,839.85, 146,081.64 and 63,422.99 is: 87,537.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,839.85 : 146,081.64 = 63,422.99 : x
  2. Step 2: Convert to fraction form
    105,839.85/146,081.64 = 63,422.99/x
  3. Step 3: Cross multiply
    105,839.85x = 146,081.64 × 63,422.99
  4. Step 4: Simplify right side
    105,839.85x = 9,264,934,392.90
  5. Step 5: Solve for x
    x = 9,264,934,392.90/105,839.85
  6. Step 6: Final answer
    x = 87,537.30

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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.