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Finding the Fourth Proportional to 111,704, 154,151.76 and 61,403.36

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Solution

The fourth proportional to 111,704, 154,151.76 and 61,403.36 is: 84,736.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,704 : 154,151.76 = 61,403.36 : x
  2. Step 2: Convert to fraction form
    111,704/154,151.76 = 61,403.36/x
  3. Step 3: Cross multiply
    111,704x = 154,151.76 × 61,403.36
  4. Step 4: Simplify right side
    111,704x = 9,465,436,013.91
  5. Step 5: Solve for x
    x = 9,465,436,013.91/111,704
  6. Step 6: Final answer
    x = 84,736.77

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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.