Home / 143,344.98-197,803.92-78,810.75

Finding the Fourth Proportional to 143,344.98, 197,803.92 and 78,810.75

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Solution

The fourth proportional to 143,344.98, 197,803.92 and 78,810.75 is: 108,752.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,344.98 : 197,803.92 = 78,810.75 : x
  2. Step 2: Convert to fraction form
    143,344.98/197,803.92 = 78,810.75/x
  3. Step 3: Cross multiply
    143,344.98x = 197,803.92 × 78,810.75
  4. Step 4: Simplify right side
    143,344.98x = 15,589,075,288.14
  5. Step 5: Solve for x
    x = 15,589,075,288.14/143,344.98
  6. Step 6: Final answer
    x = 108,752.15

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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.