Home / 105,991.20-146,281.68-68,374.80

Finding the Fourth Proportional to 105,991.20, 146,281.68 and 68,374.80

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Solution

The fourth proportional to 105,991.20, 146,281.68 and 68,374.80 is: 94,366.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,991.20 : 146,281.68 = 68,374.80 : x
  2. Step 2: Convert to fraction form
    105,991.20/146,281.68 = 68,374.80/x
  3. Step 3: Cross multiply
    105,991.20x = 146,281.68 × 68,374.80
  4. Step 4: Simplify right side
    105,991.20x = 10,001,980,613.66
  5. Step 5: Solve for x
    x = 10,001,980,613.66/105,991.20
  6. Step 6: Final answer
    x = 94,366.14

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1.5x scale

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.