Home / 190,514.52-285,751.56-78,206.64

Finding the Fourth Proportional to 190,514.52, 285,751.56 and 78,206.64

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Solution

The fourth proportional to 190,514.52, 285,751.56 and 78,206.64 is: 117,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,514.52 : 285,751.56 = 78,206.64 : x
  2. Step 2: Convert to fraction form
    190,514.52/285,751.56 = 78,206.64/x
  3. Step 3: Cross multiply
    190,514.52x = 285,751.56 × 78,206.64
  4. Step 4: Simplify right side
    190,514.52x = 22,347,669,382.36
  5. Step 5: Solve for x
    x = 22,347,669,382.36/190,514.52
  6. Step 6: Final answer
    x = 117,301.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.