Home / 143,700.48-198,303.60-79,171.68

Finding the Fourth Proportional to 143,700.48, 198,303.60 and 79,171.68

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Solution

The fourth proportional to 143,700.48, 198,303.60 and 79,171.68 is: 109,255.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,700.48 : 198,303.60 = 79,171.68 : x
  2. Step 2: Convert to fraction form
    143,700.48/198,303.60 = 79,171.68/x
  3. Step 3: Cross multiply
    143,700.48x = 198,303.60 × 79,171.68
  4. Step 4: Simplify right side
    143,700.48x = 15,700,029,162.05
  5. Step 5: Solve for x
    x = 15,700,029,162.05/143,700.48
  6. Step 6: Final answer
    x = 109,255.23

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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.