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Finding the Fourth Proportional to 111,852.51, 154,356.21 and 61,551.51

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Solution

The fourth proportional to 111,852.51, 154,356.21 and 61,551.51 is: 84,940.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,852.51 : 154,356.21 = 61,551.51 : x
  2. Step 2: Convert to fraction form
    111,852.51/154,356.21 = 61,551.51/x
  3. Step 3: Cross multiply
    111,852.51x = 154,356.21 × 61,551.51
  4. Step 4: Simplify right side
    111,852.51x = 9,500,857,803.38
  5. Step 5: Solve for x
    x = 9,500,857,803.38/111,852.51
  6. Step 6: Final answer
    x = 84,940.94

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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.