Home / 111,963.48-154,440.18-66,610.80

Finding the Fourth Proportional to 111,963.48, 154,440.18 and 66,610.80

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Solution

The fourth proportional to 111,963.48, 154,440.18 and 66,610.80 is: 91,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,963.48 : 154,440.18 = 66,610.80 : x
  2. Step 2: Convert to fraction form
    111,963.48/154,440.18 = 66,610.80/x
  3. Step 3: Cross multiply
    111,963.48x = 154,440.18 × 66,610.80
  4. Step 4: Simplify right side
    111,963.48x = 10,287,383,941.94
  5. Step 5: Solve for x
    x = 10,287,383,941.94/111,963.48
  6. Step 6: Final answer
    x = 91,881.60

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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.