Home / 131,975.30-182,121.48-78,228.42

Finding the Fourth Proportional to 131,975.30, 182,121.48 and 78,228.42

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Solution

The fourth proportional to 131,975.30, 182,121.48 and 78,228.42 is: 107,952.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,975.30 : 182,121.48 = 78,228.42 : x
  2. Step 2: Convert to fraction form
    131,975.30/182,121.48 = 78,228.42/x
  3. Step 3: Cross multiply
    131,975.30x = 182,121.48 × 78,228.42
  4. Step 4: Simplify right side
    131,975.30x = 14,247,075,628.46
  5. Step 5: Solve for x
    x = 14,247,075,628.46/131,975.30
  6. Step 6: Final answer
    x = 107,952.59

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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.