Home / 127,758.94-176,118.30-81,813.72

Finding the Fourth Proportional to 127,758.94, 176,118.30 and 81,813.72

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Solution

The fourth proportional to 127,758.94, 176,118.30 and 81,813.72 is: 112,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,758.94 : 176,118.30 = 81,813.72 : x
  2. Step 2: Convert to fraction form
    127,758.94/176,118.30 = 81,813.72/x
  3. Step 3: Cross multiply
    127,758.94x = 176,118.30 × 81,813.72
  4. Step 4: Simplify right side
    127,758.94x = 14,408,893,283.08
  5. Step 5: Solve for x
    x = 14,408,893,283.08/127,758.94
  6. Step 6: Final answer
    x = 112,781.88

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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.