Home / 105,158.75-145,122.50-57,415.73

Finding the Fourth Proportional to 105,158.75, 145,122.50 and 57,415.73

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Solution

The fourth proportional to 105,158.75, 145,122.50 and 57,415.73 is: 79,235.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,158.75 : 145,122.50 = 57,415.73 : x
  2. Step 2: Convert to fraction form
    105,158.75/145,122.50 = 57,415.73/x
  3. Step 3: Cross multiply
    105,158.75x = 145,122.50 × 57,415.73
  4. Step 4: Simplify right side
    105,158.75x = 8,332,313,694.85
  5. Step 5: Solve for x
    x = 8,332,313,694.85/105,158.75
  6. Step 6: Final answer
    x = 79,235.58

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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.