Home / 201,979.47-278,731.59-111,336.94

Finding the Fourth Proportional to 201,979.47, 278,731.59 and 111,336.94

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Solution

The fourth proportional to 201,979.47, 278,731.59 and 111,336.94 is: 153,644.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,979.47 : 278,731.59 = 111,336.94 : x
  2. Step 2: Convert to fraction form
    201,979.47/278,731.59 = 111,336.94/x
  3. Step 3: Cross multiply
    201,979.47x = 278,731.59 × 111,336.94
  4. Step 4: Simplify right side
    201,979.47x = 31,033,121,615.11
  5. Step 5: Solve for x
    x = 31,033,121,615.11/201,979.47
  6. Step 6: Final answer
    x = 153,644.93

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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.