Home / 127,968.10-191,952.15-85,977.70

Finding the Fourth Proportional to 127,968.10, 191,952.15 and 85,977.70

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Solution

The fourth proportional to 127,968.10, 191,952.15 and 85,977.70 is: 128,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,968.10 : 191,952.15 = 85,977.70 : x
  2. Step 2: Convert to fraction form
    127,968.10/191,952.15 = 85,977.70/x
  3. Step 3: Cross multiply
    127,968.10x = 191,952.15 × 85,977.70
  4. Step 4: Simplify right side
    127,968.10x = 16,503,604,367.06
  5. Step 5: Solve for x
    x = 16,503,604,367.06/127,968.10
  6. Step 6: Final answer
    x = 128,966.55

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Similar ratio
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1.5x scale

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.