Home / 143,535.03-198,076.78-79,002.89

Finding the Fourth Proportional to 143,535.03, 198,076.78 and 79,002.89

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Solution

The fourth proportional to 143,535.03, 198,076.78 and 79,002.89 is: 109,023.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,535.03 : 198,076.78 = 79,002.89 : x
  2. Step 2: Convert to fraction form
    143,535.03/198,076.78 = 79,002.89/x
  3. Step 3: Cross multiply
    143,535.03x = 198,076.78 × 79,002.89
  4. Step 4: Simplify right side
    143,535.03x = 15,648,637,912.65
  5. Step 5: Solve for x
    x = 15,648,637,912.65/143,535.03
  6. Step 6: Final answer
    x = 109,023.13

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1.5x scale

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.