Home / 143,771.60-198,405.59-83,378.05

Finding the Fourth Proportional to 143,771.60, 198,405.59 and 83,378.05

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Solution

The fourth proportional to 143,771.60, 198,405.59 and 83,378.05 is: 115,062.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,771.60 : 198,405.59 = 83,378.05 : x
  2. Step 2: Convert to fraction form
    143,771.60/198,405.59 = 83,378.05/x
  3. Step 3: Cross multiply
    143,771.60x = 198,405.59 × 83,378.05
  4. Step 4: Simplify right side
    143,771.60x = 16,542,671,203.30
  5. Step 5: Solve for x
    x = 16,542,671,203.30/143,771.60
  6. Step 6: Final answer
    x = 115,062.16

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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.