Home / 128,269.05-191,464.25-113,118.90

Finding the Fourth Proportional to 128,269.05, 191,464.25 and 113,118.90

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Solution

The fourth proportional to 128,269.05, 191,464.25 and 113,118.90 is: 168,849.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,269.05 : 191,464.25 = 113,118.90 : x
  2. Step 2: Convert to fraction form
    128,269.05/191,464.25 = 113,118.90/x
  3. Step 3: Cross multiply
    128,269.05x = 191,464.25 × 113,118.90
  4. Step 4: Simplify right side
    128,269.05x = 21,658,225,349.33
  5. Step 5: Solve for x
    x = 21,658,225,349.33/128,269.05
  6. Step 6: Final answer
    x = 168,849.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.