Home / 143,503.04-198,041.96-79,842.21

Finding the Fourth Proportional to 143,503.04, 198,041.96 and 79,842.21

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Solution

The fourth proportional to 143,503.04, 198,041.96 and 79,842.21 is: 110,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,503.04 : 198,041.96 = 79,842.21 : x
  2. Step 2: Convert to fraction form
    143,503.04/198,041.96 = 79,842.21/x
  3. Step 3: Cross multiply
    143,503.04x = 198,041.96 × 79,842.21
  4. Step 4: Simplify right side
    143,503.04x = 15,812,107,216.08
  5. Step 5: Solve for x
    x = 15,812,107,216.08/143,503.04
  6. Step 6: Final answer
    x = 110,186.56

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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.