Home / 143,426.40-197,923.44-79,762.80

Finding the Fourth Proportional to 143,426.40, 197,923.44 and 79,762.80

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Solution

The fourth proportional to 143,426.40, 197,923.44 and 79,762.80 is: 110,069.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,426.40 : 197,923.44 = 79,762.80 : x
  2. Step 2: Convert to fraction form
    143,426.40/197,923.44 = 79,762.80/x
  3. Step 3: Cross multiply
    143,426.40x = 197,923.44 × 79,762.80
  4. Step 4: Simplify right side
    143,426.40x = 15,786,927,760.03
  5. Step 5: Solve for x
    x = 15,786,927,760.03/143,426.40
  6. Step 6: Final answer
    x = 110,069.89

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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.