Home / 111,561.62-153,939.55-65,623.35

Finding the Fourth Proportional to 111,561.62, 153,939.55 and 65,623.35

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Solution

The fourth proportional to 111,561.62, 153,939.55 and 65,623.35 is: 90,551.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,561.62 : 153,939.55 = 65,623.35 : x
  2. Step 2: Convert to fraction form
    111,561.62/153,939.55 = 65,623.35/x
  3. Step 3: Cross multiply
    111,561.62x = 153,939.55 × 65,623.35
  4. Step 4: Simplify right side
    111,561.62x = 10,102,028,968.49
  5. Step 5: Solve for x
    x = 10,102,028,968.49/111,561.62
  6. Step 6: Final answer
    x = 90,551.11

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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.