Home / 148,858.36-205,412.62-85,181.56

Finding the Fourth Proportional to 148,858.36, 205,412.62 and 85,181.56

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Solution

The fourth proportional to 148,858.36, 205,412.62 and 85,181.56 is: 117,543.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,858.36 : 205,412.62 = 85,181.56 : x
  2. Step 2: Convert to fraction form
    148,858.36/205,412.62 = 85,181.56/x
  3. Step 3: Cross multiply
    148,858.36x = 205,412.62 × 85,181.56
  4. Step 4: Simplify right side
    148,858.36x = 17,497,367,415.29
  5. Step 5: Solve for x
    x = 17,497,367,415.29/148,858.36
  6. Step 6: Final answer
    x = 117,543.73

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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.