Home / 142,928.04-197,252.52-79,286.40

Finding the Fourth Proportional to 142,928.04, 197,252.52 and 79,286.40

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Solution

The fourth proportional to 142,928.04, 197,252.52 and 79,286.40 is: 109,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,928.04 : 197,252.52 = 79,286.40 : x
  2. Step 2: Convert to fraction form
    142,928.04/197,252.52 = 79,286.40/x
  3. Step 3: Cross multiply
    142,928.04x = 197,252.52 × 79,286.40
  4. Step 4: Simplify right side
    142,928.04x = 15,639,442,201.73
  5. Step 5: Solve for x
    x = 15,639,442,201.73/142,928.04
  6. Step 6: Final answer
    x = 109,421.79

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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.