Home / 189,208.66-261,106.54-103,169.12

Finding the Fourth Proportional to 189,208.66, 261,106.54 and 103,169.12

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Solution

The fourth proportional to 189,208.66, 261,106.54 and 103,169.12 is: 142,372.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,208.66 : 261,106.54 = 103,169.12 : x
  2. Step 2: Convert to fraction form
    189,208.66/261,106.54 = 103,169.12/x
  3. Step 3: Cross multiply
    189,208.66x = 261,106.54 × 103,169.12
  4. Step 4: Simplify right side
    189,208.66x = 26,938,131,128.95
  5. Step 5: Solve for x
    x = 26,938,131,128.95/189,208.66
  6. Step 6: Final answer
    x = 142,372.61

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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.