Home / 105,985.26-146,217.75-68,281.50

Finding the Fourth Proportional to 105,985.26, 146,217.75 and 68,281.50

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Solution

The fourth proportional to 105,985.26, 146,217.75 and 68,281.50 is: 94,201.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,985.26 : 146,217.75 = 68,281.50 : x
  2. Step 2: Convert to fraction form
    105,985.26/146,217.75 = 68,281.50/x
  3. Step 3: Cross multiply
    105,985.26x = 146,217.75 × 68,281.50
  4. Step 4: Simplify right side
    105,985.26x = 9,983,967,296.63
  5. Step 5: Solve for x
    x = 9,983,967,296.63/105,985.26
  6. Step 6: Final answer
    x = 94,201.47

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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.