Home / 127,923.69-191,636.19-77,879.66

Finding the Fourth Proportional to 127,923.69, 191,636.19 and 77,879.66

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Solution

The fourth proportional to 127,923.69, 191,636.19 and 77,879.66 is: 116,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,923.69 : 191,636.19 = 77,879.66 : x
  2. Step 2: Convert to fraction form
    127,923.69/191,636.19 = 77,879.66/x
  3. Step 3: Cross multiply
    127,923.69x = 191,636.19 × 77,879.66
  4. Step 4: Simplify right side
    127,923.69x = 14,924,561,799.99
  5. Step 5: Solve for x
    x = 14,924,561,799.99/127,923.69
  6. Step 6: Final answer
    x = 116,667.69

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1.5x scale

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.