Home / 111,900.04-154,403.94-66,579.40

Finding the Fourth Proportional to 111,900.04, 154,403.94 and 66,579.40

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Solution

The fourth proportional to 111,900.04, 154,403.94 and 66,579.40 is: 91,868.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,900.04 : 154,403.94 = 66,579.40 : x
  2. Step 2: Convert to fraction form
    111,900.04/154,403.94 = 66,579.40/x
  3. Step 3: Cross multiply
    111,900.04x = 154,403.94 × 66,579.40
  4. Step 4: Simplify right side
    111,900.04x = 10,280,121,682.84
  5. Step 5: Solve for x
    x = 10,280,121,682.84/111,900.04
  6. Step 6: Final answer
    x = 91,868.79

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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.