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Finding the Fourth Proportional to 111,642.27, 154,057.40 and 63,884.67

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Solution

The fourth proportional to 111,642.27, 154,057.40 and 63,884.67 is: 88,155.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,642.27 : 154,057.40 = 63,884.67 : x
  2. Step 2: Convert to fraction form
    111,642.27/154,057.40 = 63,884.67/x
  3. Step 3: Cross multiply
    111,642.27x = 154,057.40 × 63,884.67
  4. Step 4: Simplify right side
    111,642.27x = 9,841,905,840.63
  5. Step 5: Solve for x
    x = 9,841,905,840.63/111,642.27
  6. Step 6: Final answer
    x = 88,155.73

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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.