Home / 189,153.23-261,009.03-128,704.55

Finding the Fourth Proportional to 189,153.23, 261,009.03 and 128,704.55

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Solution

The fourth proportional to 189,153.23, 261,009.03 and 128,704.55 is: 177,597.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,153.23 : 261,009.03 = 128,704.55 : x
  2. Step 2: Convert to fraction form
    189,153.23/261,009.03 = 128,704.55/x
  3. Step 3: Cross multiply
    189,153.23x = 261,009.03 × 128,704.55
  4. Step 4: Simplify right side
    189,153.23x = 33,593,048,929.68
  5. Step 5: Solve for x
    x = 33,593,048,929.68/189,153.23
  6. Step 6: Final answer
    x = 177,597.02

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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.