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Finding the Fourth Proportional to 105,418.99, 145,525.71 and 67,229.79

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Solution

The fourth proportional to 105,418.99, 145,525.71 and 67,229.79 is: 92,807.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,418.99 : 145,525.71 = 67,229.79 : x
  2. Step 2: Convert to fraction form
    105,418.99/145,525.71 = 67,229.79/x
  3. Step 3: Cross multiply
    105,418.99x = 145,525.71 × 67,229.79
  4. Step 4: Simplify right side
    105,418.99x = 9,783,662,922.90
  5. Step 5: Solve for x
    x = 9,783,662,922.90/105,418.99
  6. Step 6: Final answer
    x = 92,807.41

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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.