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Finding the Fourth Proportional to 121,497.82, 167,663.75 and 67,781.45

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Solution

The fourth proportional to 121,497.82, 167,663.75 and 67,781.45 is: 93,536.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,497.82 : 167,663.75 = 67,781.45 : x
  2. Step 2: Convert to fraction form
    121,497.82/167,663.75 = 67,781.45/x
  3. Step 3: Cross multiply
    121,497.82x = 167,663.75 × 67,781.45
  4. Step 4: Simplify right side
    121,497.82x = 11,364,492,087.44
  5. Step 5: Solve for x
    x = 11,364,492,087.44/121,497.82
  6. Step 6: Final answer
    x = 93,536.59

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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.