Home / 111,665.21-154,083.33-68,666.96

Finding the Fourth Proportional to 111,665.21, 154,083.33 and 68,666.96

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Solution

The fourth proportional to 111,665.21, 154,083.33 and 68,666.96 is: 94,751.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,665.21 : 154,083.33 = 68,666.96 : x
  2. Step 2: Convert to fraction form
    111,665.21/154,083.33 = 68,666.96/x
  3. Step 3: Cross multiply
    111,665.21x = 154,083.33 × 68,666.96
  4. Step 4: Simplify right side
    111,665.21x = 10,580,434,242.99
  5. Step 5: Solve for x
    x = 10,580,434,242.99/111,665.21
  6. Step 6: Final answer
    x = 94,751.40

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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.