Home / 143,728.83-198,369.41-80,087.13

Finding the Fourth Proportional to 143,728.83, 198,369.41 and 80,087.13

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Solution

The fourth proportional to 143,728.83, 198,369.41 and 80,087.13 is: 110,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,728.83 : 198,369.41 = 80,087.13 : x
  2. Step 2: Convert to fraction form
    143,728.83/198,369.41 = 80,087.13/x
  3. Step 3: Cross multiply
    143,728.83x = 198,369.41 × 80,087.13
  4. Step 4: Simplify right side
    143,728.83x = 15,886,836,326.26
  5. Step 5: Solve for x
    x = 15,886,836,326.26/143,728.83
  6. Step 6: Final answer
    x = 110,533.40

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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.