Home / 143,679.95-198,270.54-79,136.63

Finding the Fourth Proportional to 143,679.95, 198,270.54 and 79,136.63

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Solution

The fourth proportional to 143,679.95, 198,270.54 and 79,136.63 is: 109,204.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,679.95 : 198,270.54 = 79,136.63 : x
  2. Step 2: Convert to fraction form
    143,679.95/198,270.54 = 79,136.63/x
  3. Step 3: Cross multiply
    143,679.95x = 198,270.54 × 79,136.63
  4. Step 4: Simplify right side
    143,679.95x = 15,690,460,976.84
  5. Step 5: Solve for x
    x = 15,690,460,976.84/143,679.95
  6. Step 6: Final answer
    x = 109,204.25

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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.