Home / 142,729.40-213,863.70-119,228.60

Finding the Fourth Proportional to 142,729.40, 213,863.70 and 119,228.60

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Solution

The fourth proportional to 142,729.40, 213,863.70 and 119,228.60 is: 178,650.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,729.40 : 213,863.70 = 119,228.60 : x
  2. Step 2: Convert to fraction form
    142,729.40/213,863.70 = 119,228.60/x
  3. Step 3: Cross multiply
    142,729.40x = 213,863.70 × 119,228.60
  4. Step 4: Simplify right side
    142,729.40x = 25,498,669,541.82
  5. Step 5: Solve for x
    x = 25,498,669,541.82/142,729.40
  6. Step 6: Final answer
    x = 178,650.44

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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.