Home / 111,787.17-154,212.09-66,433.05

Finding the Fourth Proportional to 111,787.17, 154,212.09 and 66,433.05

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Solution

The fourth proportional to 111,787.17, 154,212.09 and 66,433.05 is: 91,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,787.17 : 154,212.09 = 66,433.05 : x
  2. Step 2: Convert to fraction form
    111,787.17/154,212.09 = 66,433.05/x
  3. Step 3: Cross multiply
    111,787.17x = 154,212.09 × 66,433.05
  4. Step 4: Simplify right side
    111,787.17x = 10,244,779,485.57
  5. Step 5: Solve for x
    x = 10,244,779,485.57/111,787.17
  6. Step 6: Final answer
    x = 91,645.40

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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.