Home / 99,205.80-136,828.98-68,975.98

Finding the Fourth Proportional to 99,205.80, 136,828.98 and 68,975.98

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Solution

The fourth proportional to 99,205.80, 136,828.98 and 68,975.98 is: 95,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,205.80 : 136,828.98 = 68,975.98 : x
  2. Step 2: Convert to fraction form
    99,205.80/136,828.98 = 68,975.98/x
  3. Step 3: Cross multiply
    99,205.80x = 136,828.98 × 68,975.98
  4. Step 4: Simplify right side
    99,205.80x = 9,437,912,987.90
  5. Step 5: Solve for x
    x = 9,437,912,987.90/99,205.80
  6. Step 6: Final answer
    x = 95,134.69

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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.