Home / 141,538.80-212,133.24-71,379.84

Finding the Fourth Proportional to 141,538.80, 212,133.24 and 71,379.84

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Solution

The fourth proportional to 141,538.80, 212,133.24 and 71,379.84 is: 106,981.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,538.80 : 212,133.24 = 71,379.84 : x
  2. Step 2: Convert to fraction form
    141,538.80/212,133.24 = 71,379.84/x
  3. Step 3: Cross multiply
    141,538.80x = 212,133.24 × 71,379.84
  4. Step 4: Simplify right side
    141,538.80x = 15,142,036,729.88
  5. Step 5: Solve for x
    x = 15,142,036,729.88/141,538.80
  6. Step 6: Final answer
    x = 106,981.53

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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.