Home / 143,984.24-198,696.80-79,454

Finding the Fourth Proportional to 143,984.24, 198,696.80 and 79,454

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Solution

The fourth proportional to 143,984.24, 198,696.80 and 79,454 is: 109,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,984.24 : 198,696.80 = 79,454 : x
  2. Step 2: Convert to fraction form
    143,984.24/198,696.80 = 79,454/x
  3. Step 3: Cross multiply
    143,984.24x = 198,696.80 × 79,454
  4. Step 4: Simplify right side
    143,984.24x = 15,787,255,547.20
  5. Step 5: Solve for x
    x = 15,787,255,547.20/143,984.24
  6. Step 6: Final answer
    x = 109,645.72

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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.