Home / 109,379.13-163,813.77-105,590.84

Finding the Fourth Proportional to 109,379.13, 163,813.77 and 105,590.84

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Solution

The fourth proportional to 109,379.13, 163,813.77 and 105,590.84 is: 158,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,379.13 : 163,813.77 = 105,590.84 : x
  2. Step 2: Convert to fraction form
    109,379.13/163,813.77 = 105,590.84/x
  3. Step 3: Cross multiply
    109,379.13x = 163,813.77 × 105,590.84
  4. Step 4: Simplify right side
    109,379.13x = 17,297,233,680.25
  5. Step 5: Solve for x
    x = 17,297,233,680.25/109,379.13
  6. Step 6: Final answer
    x = 158,140.16

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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.