Home / 143,867.91-198,533.37-79,337.16

Finding the Fourth Proportional to 143,867.91, 198,533.37 and 79,337.16

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Solution

The fourth proportional to 143,867.91, 198,533.37 and 79,337.16 is: 109,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,867.91 : 198,533.37 = 79,337.16 : x
  2. Step 2: Convert to fraction form
    143,867.91/198,533.37 = 79,337.16/x
  3. Step 3: Cross multiply
    143,867.91x = 198,533.37 × 79,337.16
  4. Step 4: Simplify right side
    143,867.91x = 15,751,073,741.03
  5. Step 5: Solve for x
    x = 15,751,073,741.03/143,867.91
  6. Step 6: Final answer
    x = 109,482.88

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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.