Home / 143,505.88-215,253.99-77,075.75

Finding the Fourth Proportional to 143,505.88, 215,253.99 and 77,075.75

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Solution

The fourth proportional to 143,505.88, 215,253.99 and 77,075.75 is: 115,611.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,505.88 : 215,253.99 = 77,075.75 : x
  2. Step 2: Convert to fraction form
    143,505.88/215,253.99 = 77,075.75/x
  3. Step 3: Cross multiply
    143,505.88x = 215,253.99 × 77,075.75
  4. Step 4: Simplify right side
    143,505.88x = 16,590,863,257.88
  5. Step 5: Solve for x
    x = 16,590,863,257.88/143,505.88
  6. Step 6: Final answer
    x = 115,611.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.