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Finding the Fourth Proportional to 118,779, 163,917.66 and 67,790.71

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Solution

The fourth proportional to 118,779, 163,917.66 and 67,790.71 is: 93,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,779 : 163,917.66 = 67,790.71 : x
  2. Step 2: Convert to fraction form
    118,779/163,917.66 = 67,790.71/x
  3. Step 3: Cross multiply
    118,779x = 163,917.66 × 67,790.71
  4. Step 4: Simplify right side
    118,779x = 11,112,094,552.94
  5. Step 5: Solve for x
    x = 11,112,094,552.94/118,779
  6. Step 6: Final answer
    x = 93,552.69

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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.