Home / 143,351.53-197,830.18-78,825.66

Finding the Fourth Proportional to 143,351.53, 197,830.18 and 78,825.66

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Solution

The fourth proportional to 143,351.53, 197,830.18 and 78,825.66 is: 108,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,351.53 : 197,830.18 = 78,825.66 : x
  2. Step 2: Convert to fraction form
    143,351.53/197,830.18 = 78,825.66/x
  3. Step 3: Cross multiply
    143,351.53x = 197,830.18 × 78,825.66
  4. Step 4: Simplify right side
    143,351.53x = 15,594,094,975.88
  5. Step 5: Solve for x
    x = 15,594,094,975.88/143,351.53
  6. Step 6: Final answer
    x = 108,782.20

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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.