Home / 143,119.16-197,504.88-79,457.12

Finding the Fourth Proportional to 143,119.16, 197,504.88 and 79,457.12

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Solution

The fourth proportional to 143,119.16, 197,504.88 and 79,457.12 is: 109,651.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,119.16 : 197,504.88 = 79,457.12 : x
  2. Step 2: Convert to fraction form
    143,119.16/197,504.88 = 79,457.12/x
  3. Step 3: Cross multiply
    143,119.16x = 197,504.88 × 79,457.12
  4. Step 4: Simplify right side
    143,119.16x = 15,693,168,950.75
  5. Step 5: Solve for x
    x = 15,693,168,950.75/143,119.16
  6. Step 6: Final answer
    x = 109,651.07

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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.