Home / 111,899.04-154,402.56-66,578.40

Finding the Fourth Proportional to 111,899.04, 154,402.56 and 66,578.40

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Solution

The fourth proportional to 111,899.04, 154,402.56 and 66,578.40 is: 91,867.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,899.04 : 154,402.56 = 66,578.40 : x
  2. Step 2: Convert to fraction form
    111,899.04/154,402.56 = 66,578.40/x
  3. Step 3: Cross multiply
    111,899.04x = 154,402.56 × 66,578.40
  4. Step 4: Simplify right side
    111,899.04x = 10,279,875,400.70
  5. Step 5: Solve for x
    x = 10,279,875,400.70/111,899.04
  6. Step 6: Final answer
    x = 91,867.41

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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.