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Finding the Fourth Proportional to 77,119.58, 106,188.46 and 67,505.66

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Solution

The fourth proportional to 77,119.58, 106,188.46 and 67,505.66 is: 92,950.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,119.58 : 106,188.46 = 67,505.66 : x
  2. Step 2: Convert to fraction form
    77,119.58/106,188.46 = 67,505.66/x
  3. Step 3: Cross multiply
    77,119.58x = 106,188.46 × 67,505.66
  4. Step 4: Simplify right side
    77,119.58x = 7,168,322,076.68
  5. Step 5: Solve for x
    x = 7,168,322,076.68/77,119.58
  6. Step 6: Final answer
    x = 92,950.74

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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.