Home / 143,648.99-198,233.73-79,117.00

Finding the Fourth Proportional to 143,648.99, 198,233.73 and 79,117.00

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Solution

The fourth proportional to 143,648.99, 198,233.73 and 79,117.00 is: 109,180.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,648.99 : 198,233.73 = 79,117.00 : x
  2. Step 2: Convert to fraction form
    143,648.99/198,233.73 = 79,117.00/x
  3. Step 3: Cross multiply
    143,648.99x = 198,233.73 × 79,117.00
  4. Step 4: Simplify right side
    143,648.99x = 15,683,657,520.83
  5. Step 5: Solve for x
    x = 15,683,657,520.83/143,648.99
  6. Step 6: Final answer
    x = 109,180.42

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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.