Home / 115,384.05-159,172.97-99,441.09

Finding the Fourth Proportional to 115,384.05, 159,172.97 and 99,441.09

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Solution

The fourth proportional to 115,384.05, 159,172.97 and 99,441.09 is: 137,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,384.05 : 159,172.97 = 99,441.09 : x
  2. Step 2: Convert to fraction form
    115,384.05/159,172.97 = 99,441.09/x
  3. Step 3: Cross multiply
    115,384.05x = 159,172.97 × 99,441.09
  4. Step 4: Simplify right side
    115,384.05x = 15,828,333,138.13
  5. Step 5: Solve for x
    x = 15,828,333,138.13/115,384.05
  6. Step 6: Final answer
    x = 137,179.56

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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.