Home / 142,304.55-196,380.89-77,775.09

Finding the Fourth Proportional to 142,304.55, 196,380.89 and 77,775.09

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Solution

The fourth proportional to 142,304.55, 196,380.89 and 77,775.09 is: 107,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,304.55 : 196,380.89 = 77,775.09 : x
  2. Step 2: Convert to fraction form
    142,304.55/196,380.89 = 77,775.09/x
  3. Step 3: Cross multiply
    142,304.55x = 196,380.89 × 77,775.09
  4. Step 4: Simplify right side
    142,304.55x = 15,273,540,023.25
  5. Step 5: Solve for x
    x = 15,273,540,023.25/142,304.55
  6. Step 6: Final answer
    x = 107,329.95

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1.5x scale

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.