Home / 118,603.78-163,732.59-80,564.56

Finding the Fourth Proportional to 118,603.78, 163,732.59 and 80,564.56

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Solution

The fourth proportional to 118,603.78, 163,732.59 and 80,564.56 is: 111,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,603.78 : 163,732.59 = 80,564.56 : x
  2. Step 2: Convert to fraction form
    118,603.78/163,732.59 = 80,564.56/x
  3. Step 3: Cross multiply
    118,603.78x = 163,732.59 × 80,564.56
  4. Step 4: Simplify right side
    118,603.78x = 13,191,043,661.68
  5. Step 5: Solve for x
    x = 13,191,043,661.68/118,603.78
  6. Step 6: Final answer
    x = 111,219.42

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1.5x scale

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.