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Finding the Fourth Proportional to 118,686, 163,805.04 and 67,698.88

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Solution

The fourth proportional to 118,686, 163,805.04 and 67,698.88 is: 93,434.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,686 : 163,805.04 = 67,698.88 : x
  2. Step 2: Convert to fraction form
    118,686/163,805.04 = 67,698.88/x
  3. Step 3: Cross multiply
    118,686x = 163,805.04 × 67,698.88
  4. Step 4: Simplify right side
    118,686x = 11,089,417,746.36
  5. Step 5: Solve for x
    x = 11,089,417,746.36/118,686
  6. Step 6: Final answer
    x = 93,434.93

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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.