Home / 128,189.43-176,651.69-92,311.70

Finding the Fourth Proportional to 128,189.43, 176,651.69 and 92,311.70

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Solution

The fourth proportional to 128,189.43, 176,651.69 and 92,311.70 is: 127,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,189.43 : 176,651.69 = 92,311.70 : x
  2. Step 2: Convert to fraction form
    128,189.43/176,651.69 = 92,311.70/x
  3. Step 3: Cross multiply
    128,189.43x = 176,651.69 × 92,311.70
  4. Step 4: Simplify right side
    128,189.43x = 16,307,016,466.96
  5. Step 5: Solve for x
    x = 16,307,016,466.96/128,189.43
  6. Step 6: Final answer
    x = 127,210.30

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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.