Home / 142,638.19-213,922.60-47,843.80

Finding the Fourth Proportional to 142,638.19, 213,922.60 and 47,843.80

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Solution

The fourth proportional to 142,638.19, 213,922.60 and 47,843.80 is: 71,754.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,638.19 : 213,922.60 = 47,843.80 : x
  2. Step 2: Convert to fraction form
    142,638.19/213,922.60 = 47,843.80/x
  3. Step 3: Cross multiply
    142,638.19x = 213,922.60 × 47,843.80
  4. Step 4: Simplify right side
    142,638.19x = 10,234,869,435.46
  5. Step 5: Solve for x
    x = 10,234,869,435.46/142,638.19
  6. Step 6: Final answer
    x = 71,754.06

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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.