Home / 140,205.80-210,357.88-87,553.78

Finding the Fourth Proportional to 140,205.80, 210,357.88 and 87,553.78

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Solution

The fourth proportional to 140,205.80, 210,357.88 and 87,553.78 is: 131,361.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,205.80 : 210,357.88 = 87,553.78 : x
  2. Step 2: Convert to fraction form
    140,205.80/210,357.88 = 87,553.78/x
  3. Step 3: Cross multiply
    140,205.80x = 210,357.88 × 87,553.78
  4. Step 4: Simplify right side
    140,205.80x = 18,417,626,802.01
  5. Step 5: Solve for x
    x = 18,417,626,802.01/140,205.80
  6. Step 6: Final answer
    x = 131,361.37

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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.