Home / 103,620.04-143,041.94-79,737.80

Finding the Fourth Proportional to 103,620.04, 143,041.94 and 79,737.80

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Solution

The fourth proportional to 103,620.04, 143,041.94 and 79,737.80 is: 110,073.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.04 : 143,041.94 = 79,737.80 : x
  2. Step 2: Convert to fraction form
    103,620.04/143,041.94 = 79,737.80/x
  3. Step 3: Cross multiply
    103,620.04x = 143,041.94 × 79,737.80
  4. Step 4: Simplify right side
    103,620.04x = 11,405,849,603.33
  5. Step 5: Solve for x
    x = 11,405,849,603.33/103,620.04
  6. Step 6: Final answer
    x = 110,073.78

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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.