Home / 105,195.90-145,171.50-57,450.66

Finding the Fourth Proportional to 105,195.90, 145,171.50 and 57,450.66

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Solution

The fourth proportional to 105,195.90, 145,171.50 and 57,450.66 is: 79,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,195.90 : 145,171.50 = 57,450.66 : x
  2. Step 2: Convert to fraction form
    105,195.90/145,171.50 = 57,450.66/x
  3. Step 3: Cross multiply
    105,195.90x = 145,171.50 × 57,450.66
  4. Step 4: Simplify right side
    105,195.90x = 8,340,197,762.33
  5. Step 5: Solve for x
    x = 8,340,197,762.33/105,195.90
  6. Step 6: Final answer
    x = 79,282.54

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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.