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Finding the Fourth Proportional to 121,495.35, 167,663.05 and 67,780.41

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Solution

The fourth proportional to 121,495.35, 167,663.05 and 67,780.41 is: 93,536.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,495.35 : 167,663.05 = 67,780.41 : x
  2. Step 2: Convert to fraction form
    121,495.35/167,663.05 = 67,780.41/x
  3. Step 3: Cross multiply
    121,495.35x = 167,663.05 × 67,780.41
  4. Step 4: Simplify right side
    121,495.35x = 11,364,270,270.85
  5. Step 5: Solve for x
    x = 11,364,270,270.85/121,495.35
  6. Step 6: Final answer
    x = 93,536.67

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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.