Home / 190,805.19-263,300.86-105,916.78

Finding the Fourth Proportional to 190,805.19, 263,300.86 and 105,916.78

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Solution

The fourth proportional to 190,805.19, 263,300.86 and 105,916.78 is: 146,159.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,805.19 : 263,300.86 = 105,916.78 : x
  2. Step 2: Convert to fraction form
    190,805.19/263,300.86 = 105,916.78/x
  3. Step 3: Cross multiply
    190,805.19x = 263,300.86 × 105,916.78
  4. Step 4: Simplify right side
    190,805.19x = 27,887,979,723.95
  5. Step 5: Solve for x
    x = 27,887,979,723.95/190,805.19
  6. Step 6: Final answer
    x = 146,159.44

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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.