Home / 115,505.99-159,396.54-64,519.64

Finding the Fourth Proportional to 115,505.99, 159,396.54 and 64,519.64

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Solution

The fourth proportional to 115,505.99, 159,396.54 and 64,519.64 is: 89,036.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,505.99 : 159,396.54 = 64,519.64 : x
  2. Step 2: Convert to fraction form
    115,505.99/159,396.54 = 64,519.64/x
  3. Step 3: Cross multiply
    115,505.99x = 159,396.54 × 64,519.64
  4. Step 4: Simplify right side
    115,505.99x = 10,284,207,378.05
  5. Step 5: Solve for x
    x = 10,284,207,378.05/115,505.99
  6. Step 6: Final answer
    x = 89,036.14

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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.