Home / 105,987.20-146,276.16-68,370.80

Finding the Fourth Proportional to 105,987.20, 146,276.16 and 68,370.80

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Solution

The fourth proportional to 105,987.20, 146,276.16 and 68,370.80 is: 94,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,987.20 : 146,276.16 = 68,370.80 : x
  2. Step 2: Convert to fraction form
    105,987.20/146,276.16 = 68,370.80/x
  3. Step 3: Cross multiply
    105,987.20x = 146,276.16 × 68,370.80
  4. Step 4: Simplify right side
    105,987.20x = 10,001,018,080.13
  5. Step 5: Solve for x
    x = 10,001,018,080.13/105,987.20
  6. Step 6: Final answer
    x = 94,360.62

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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.