Home / 118,603.12-163,772.04-84,715.56

Finding the Fourth Proportional to 118,603.12, 163,772.04 and 84,715.56

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Solution

The fourth proportional to 118,603.12, 163,772.04 and 84,715.56 is: 116,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,603.12 : 163,772.04 = 84,715.56 : x
  2. Step 2: Convert to fraction form
    118,603.12/163,772.04 = 84,715.56/x
  3. Step 3: Cross multiply
    118,603.12x = 163,772.04 × 84,715.56
  4. Step 4: Simplify right side
    118,603.12x = 13,874,040,080.94
  5. Step 5: Solve for x
    x = 13,874,040,080.94/118,603.12
  6. Step 6: Final answer
    x = 116,978.71

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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.