Home / 189,048.25-260,983.04-128,116.33

Finding the Fourth Proportional to 189,048.25, 260,983.04 and 128,116.33

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Solution

The fourth proportional to 189,048.25, 260,983.04 and 128,116.33 is: 176,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,048.25 : 260,983.04 = 128,116.33 : x
  2. Step 2: Convert to fraction form
    189,048.25/260,983.04 = 128,116.33/x
  3. Step 3: Cross multiply
    189,048.25x = 260,983.04 × 128,116.33
  4. Step 4: Simplify right side
    189,048.25x = 33,436,189,812.36
  5. Step 5: Solve for x
    x = 33,436,189,812.36/189,048.25
  6. Step 6: Final answer
    x = 176,865.90

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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.