Home / 143,416.65-197,895.78-79,742.19

Finding the Fourth Proportional to 143,416.65, 197,895.78 and 79,742.19

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Solution

The fourth proportional to 143,416.65, 197,895.78 and 79,742.19 is: 110,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,416.65 : 197,895.78 = 79,742.19 : x
  2. Step 2: Convert to fraction form
    143,416.65/197,895.78 = 79,742.19/x
  3. Step 3: Cross multiply
    143,416.65x = 197,895.78 × 79,742.19
  4. Step 4: Simplify right side
    143,416.65x = 15,780,642,888.96
  5. Step 5: Solve for x
    x = 15,780,642,888.96/143,416.65
  6. Step 6: Final answer
    x = 110,033.55

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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.