Home / 143,386.50-197,855.55-79,716.18

Finding the Fourth Proportional to 143,386.50, 197,855.55 and 79,716.18

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Solution

The fourth proportional to 143,386.50, 197,855.55 and 79,716.18 is: 109,998.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,386.50 : 197,855.55 = 79,716.18 : x
  2. Step 2: Convert to fraction form
    143,386.50/197,855.55 = 79,716.18/x
  3. Step 3: Cross multiply
    143,386.50x = 197,855.55 × 79,716.18
  4. Step 4: Simplify right side
    143,386.50x = 15,772,288,637.80
  5. Step 5: Solve for x
    x = 15,772,288,637.80/143,386.50
  6. Step 6: Final answer
    x = 109,998.42

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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.