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Finding the Fourth Proportional to 117,175.86, 161,615.16 and 76,348.98

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Solution

The fourth proportional to 117,175.86, 161,615.16 and 76,348.98 is: 105,304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,175.86 : 161,615.16 = 76,348.98 : x
  2. Step 2: Convert to fraction form
    117,175.86/161,615.16 = 76,348.98/x
  3. Step 3: Cross multiply
    117,175.86x = 161,615.16 × 76,348.98
  4. Step 4: Simplify right side
    117,175.86x = 12,339,152,618.54
  5. Step 5: Solve for x
    x = 12,339,152,618.54/117,175.86
  6. Step 6: Final answer
    x = 105,304.56

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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.