Home / 189,136.42-261,115.05-125,561.14

Finding the Fourth Proportional to 189,136.42, 261,115.05 and 125,561.14

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Solution

The fourth proportional to 189,136.42, 261,115.05 and 125,561.14 is: 173,345.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,136.42 : 261,115.05 = 125,561.14 : x
  2. Step 2: Convert to fraction form
    189,136.42/261,115.05 = 125,561.14/x
  3. Step 3: Cross multiply
    189,136.42x = 261,115.05 × 125,561.14
  4. Step 4: Simplify right side
    189,136.42x = 32,785,903,349.16
  5. Step 5: Solve for x
    x = 32,785,903,349.16/189,136.42
  6. Step 6: Final answer
    x = 173,345.27

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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.