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Finding the Fourth Proportional to 117,170.89, 161,698.97 and 71,822.82

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Solution

The fourth proportional to 117,170.89, 161,698.97 and 71,822.82 is: 99,117.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,170.89 : 161,698.97 = 71,822.82 : x
  2. Step 2: Convert to fraction form
    117,170.89/161,698.97 = 71,822.82/x
  3. Step 3: Cross multiply
    117,170.89x = 161,698.97 × 71,822.82
  4. Step 4: Simplify right side
    117,170.89x = 11,613,675,148.89
  5. Step 5: Solve for x
    x = 11,613,675,148.89/117,170.89
  6. Step 6: Final answer
    x = 99,117.41

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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.