Home / 111,550.47-153,895.85-63,778.19

Finding the Fourth Proportional to 111,550.47, 153,895.85 and 63,778.19

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Solution

The fourth proportional to 111,550.47, 153,895.85 and 63,778.19 is: 87,988.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,550.47 : 153,895.85 = 63,778.19 : x
  2. Step 2: Convert to fraction form
    111,550.47/153,895.85 = 63,778.19/x
  3. Step 3: Cross multiply
    111,550.47x = 153,895.85 × 63,778.19
  4. Step 4: Simplify right side
    111,550.47x = 9,815,197,912.31
  5. Step 5: Solve for x
    x = 9,815,197,912.31/111,550.47
  6. Step 6: Final answer
    x = 87,988.86

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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.