Home / 143,603.69-198,180-79,941.47

Finding the Fourth Proportional to 143,603.69, 198,180 and 79,941.47

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Solution

The fourth proportional to 143,603.69, 198,180 and 79,941.47 is: 110,323.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,603.69 : 198,180 = 79,941.47 : x
  2. Step 2: Convert to fraction form
    143,603.69/198,180 = 79,941.47/x
  3. Step 3: Cross multiply
    143,603.69x = 198,180 × 79,941.47
  4. Step 4: Simplify right side
    143,603.69x = 15,842,799,533.70
  5. Step 5: Solve for x
    x = 15,842,799,533.70/143,603.69
  6. Step 6: Final answer
    x = 110,323.07

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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.