Home / 111,986.38-154,541.20-61,685.38

Finding the Fourth Proportional to 111,986.38, 154,541.20 and 61,685.38

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Solution

The fourth proportional to 111,986.38, 154,541.20 and 61,685.38 is: 85,125.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,986.38 : 154,541.20 = 61,685.38 : x
  2. Step 2: Convert to fraction form
    111,986.38/154,541.20 = 61,685.38/x
  3. Step 3: Cross multiply
    111,986.38x = 154,541.20 × 61,685.38
  4. Step 4: Simplify right side
    111,986.38x = 9,532,932,647.66
  5. Step 5: Solve for x
    x = 9,532,932,647.66/111,986.38
  6. Step 6: Final answer
    x = 85,125.82

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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.