Home / 143,771.60-198,405.59-83,378.04

Finding the Fourth Proportional to 143,771.60, 198,405.59 and 83,378.04

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Solution

The fourth proportional to 143,771.60, 198,405.59 and 83,378.04 is: 115,062.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,771.60 : 198,405.59 = 83,378.04 : x
  2. Step 2: Convert to fraction form
    143,771.60/198,405.59 = 83,378.04/x
  3. Step 3: Cross multiply
    143,771.60x = 198,405.59 × 83,378.04
  4. Step 4: Simplify right side
    143,771.60x = 16,542,668,802.35
  5. Step 5: Solve for x
    x = 16,542,668,802.35/143,771.60
  6. Step 6: Final answer
    x = 115,062.15

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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.