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Finding the Fourth Proportional to 111,942, 154,481.04 and 61,642.08

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Solution

The fourth proportional to 111,942, 154,481.04 and 61,642.08 is: 85,066.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,942 : 154,481.04 = 61,642.08 : x
  2. Step 2: Convert to fraction form
    111,942/154,481.04 = 61,642.08/x
  3. Step 3: Cross multiply
    111,942x = 154,481.04 × 61,642.08
  4. Step 4: Simplify right side
    111,942x = 9,522,532,626.16
  5. Step 5: Solve for x
    x = 9,522,532,626.16/111,942
  6. Step 6: Final answer
    x = 85,066.67

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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.