Home / 105,698.91-158,382.07-81,741.86

Finding the Fourth Proportional to 105,698.91, 158,382.07 and 81,741.86

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Solution

The fourth proportional to 105,698.91, 158,382.07 and 81,741.86 is: 122,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,698.91 : 158,382.07 = 81,741.86 : x
  2. Step 2: Convert to fraction form
    105,698.91/158,382.07 = 81,741.86/x
  3. Step 3: Cross multiply
    105,698.91x = 158,382.07 × 81,741.86
  4. Step 4: Simplify right side
    105,698.91x = 12,946,444,805.65
  5. Step 5: Solve for x
    x = 12,946,444,805.65/105,698.91
  6. Step 6: Final answer
    x = 122,484.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.