Home / 143,520.48-198,066.04-79,859.66

Finding the Fourth Proportional to 143,520.48, 198,066.04 and 79,859.66

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Solution

The fourth proportional to 143,520.48, 198,066.04 and 79,859.66 is: 110,210.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,520.48 : 198,066.04 = 79,859.66 : x
  2. Step 2: Convert to fraction form
    143,520.48/198,066.04 = 79,859.66/x
  3. Step 3: Cross multiply
    143,520.48x = 198,066.04 × 79,859.66
  4. Step 4: Simplify right side
    143,520.48x = 15,817,485,421.97
  5. Step 5: Solve for x
    x = 15,817,485,421.97/143,520.48
  6. Step 6: Final answer
    x = 110,210.65

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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.