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Finding the Fourth Proportional to 111,113.33, 153,336.83 and 102,637.08

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Solution

The fourth proportional to 111,113.33, 153,336.83 and 102,637.08 is: 141,639.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,113.33 : 153,336.83 = 102,637.08 : x
  2. Step 2: Convert to fraction form
    111,113.33/153,336.83 = 102,637.08/x
  3. Step 3: Cross multiply
    111,113.33x = 153,336.83 × 102,637.08
  4. Step 4: Simplify right side
    111,113.33x = 15,738,043,974.47
  5. Step 5: Solve for x
    x = 15,738,043,974.47/111,113.33
  6. Step 6: Final answer
    x = 141,639.57

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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.