Home / 140,778.52-194,274.40-77,118.60

Finding the Fourth Proportional to 140,778.52, 194,274.40 and 77,118.60

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Solution

The fourth proportional to 140,778.52, 194,274.40 and 77,118.60 is: 106,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,778.52 : 194,274.40 = 77,118.60 : x
  2. Step 2: Convert to fraction form
    140,778.52/194,274.40 = 77,118.60/x
  3. Step 3: Cross multiply
    140,778.52x = 194,274.40 × 77,118.60
  4. Step 4: Simplify right side
    140,778.52x = 14,982,169,743.84
  5. Step 5: Solve for x
    x = 14,982,169,743.84/140,778.52
  6. Step 6: Final answer
    x = 106,423.69

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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.