Home / 140,780.54-194,277.18-77,120.60

Finding the Fourth Proportional to 140,780.54, 194,277.18 and 77,120.60

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Solution

The fourth proportional to 140,780.54, 194,277.18 and 77,120.60 is: 106,426.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,780.54 : 194,277.18 = 77,120.60 : x
  2. Step 2: Convert to fraction form
    140,780.54/194,277.18 = 77,120.60/x
  3. Step 3: Cross multiply
    140,780.54x = 194,277.18 × 77,120.60
  4. Step 4: Simplify right side
    140,780.54x = 14,982,772,687.91
  5. Step 5: Solve for x
    x = 14,982,772,687.91/140,780.54
  6. Step 6: Final answer
    x = 106,426.45

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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.