Home / 127,905.12-176,620.50-80,240.40

Finding the Fourth Proportional to 127,905.12, 176,620.50 and 80,240.40

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Solution

The fourth proportional to 127,905.12, 176,620.50 and 80,240.40 is: 110,801.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,905.12 : 176,620.50 = 80,240.40 : x
  2. Step 2: Convert to fraction form
    127,905.12/176,620.50 = 80,240.40/x
  3. Step 3: Cross multiply
    127,905.12x = 176,620.50 × 80,240.40
  4. Step 4: Simplify right side
    127,905.12x = 14,172,099,568.20
  5. Step 5: Solve for x
    x = 14,172,099,568.20/127,905.12
  6. Step 6: Final answer
    x = 110,801.66

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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.