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Finding the Fourth Proportional to 105,418.74, 145,525.37 and 67,229.54

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Solution

The fourth proportional to 105,418.74, 145,525.37 and 67,229.54 is: 92,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,418.74 : 145,525.37 = 67,229.54 : x
  2. Step 2: Convert to fraction form
    105,418.74/145,525.37 = 67,229.54/x
  3. Step 3: Cross multiply
    105,418.74x = 145,525.37 × 67,229.54
  4. Step 4: Simplify right side
    105,418.74x = 9,783,602,619.66
  5. Step 5: Solve for x
    x = 9,783,602,619.66/105,418.74
  6. Step 6: Final answer
    x = 92,807.05

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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.