Home / 143,424.42-197,922.28-78,011.60

Finding the Fourth Proportional to 143,424.42, 197,922.28 and 78,011.60

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Solution

The fourth proportional to 143,424.42, 197,922.28 and 78,011.60 is: 107,654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,424.42 : 197,922.28 = 78,011.60 : x
  2. Step 2: Convert to fraction form
    143,424.42/197,922.28 = 78,011.60/x
  3. Step 3: Cross multiply
    143,424.42x = 197,922.28 × 78,011.60
  4. Step 4: Simplify right side
    143,424.42x = 15,440,233,738.45
  5. Step 5: Solve for x
    x = 15,440,233,738.45/143,424.42
  6. Step 6: Final answer
    x = 107,654.15

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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.