Home / 203,147.09-280,389.64-135,166.93

Finding the Fourth Proportional to 203,147.09, 280,389.64 and 135,166.93

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Solution

The fourth proportional to 203,147.09, 280,389.64 and 135,166.93 is: 186,561.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,147.09 : 280,389.64 = 135,166.93 : x
  2. Step 2: Convert to fraction form
    203,147.09/280,389.64 = 135,166.93/x
  3. Step 3: Cross multiply
    203,147.09x = 280,389.64 × 135,166.93
  4. Step 4: Simplify right side
    203,147.09x = 37,899,405,803.71
  5. Step 5: Solve for x
    x = 37,899,405,803.71/203,147.09
  6. Step 6: Final answer
    x = 186,561.41

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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.