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Finding the Fourth Proportional to 121,495.07, 167,662.71 and 67,780.06

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Solution

The fourth proportional to 121,495.07, 167,662.71 and 67,780.06 is: 93,536.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,495.07 : 167,662.71 = 67,780.06 : x
  2. Step 2: Convert to fraction form
    121,495.07/167,662.71 = 67,780.06/x
  3. Step 3: Cross multiply
    121,495.07x = 167,662.71 × 67,780.06
  4. Step 4: Simplify right side
    121,495.07x = 11,364,188,124.41
  5. Step 5: Solve for x
    x = 11,364,188,124.41/121,495.07
  6. Step 6: Final answer
    x = 93,536.21

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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.