Home / 111,966.72-154,517.76-61,670.40

Finding the Fourth Proportional to 111,966.72, 154,517.76 and 61,670.40

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Solution

The fourth proportional to 111,966.72, 154,517.76 and 61,670.40 is: 85,107.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,966.72 : 154,517.76 = 61,670.40 : x
  2. Step 2: Convert to fraction form
    111,966.72/154,517.76 = 61,670.40/x
  3. Step 3: Cross multiply
    111,966.72x = 154,517.76 × 61,670.40
  4. Step 4: Simplify right side
    111,966.72x = 9,529,172,066.30
  5. Step 5: Solve for x
    x = 9,529,172,066.30/111,966.72
  6. Step 6: Final answer
    x = 85,107.18

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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.