Home / 105,116.10-145,180.89-76,562.97

Finding the Fourth Proportional to 105,116.10, 145,180.89 and 76,562.97

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Solution

The fourth proportional to 105,116.10, 145,180.89 and 76,562.97 is: 105,744.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,116.10 : 145,180.89 = 76,562.97 : x
  2. Step 2: Convert to fraction form
    105,116.10/145,180.89 = 76,562.97/x
  3. Step 3: Cross multiply
    105,116.10x = 145,180.89 × 76,562.97
  4. Step 4: Simplify right side
    105,116.10x = 11,115,480,125.64
  5. Step 5: Solve for x
    x = 11,115,480,125.64/105,116.10
  6. Step 6: Final answer
    x = 105,744.79

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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.