Home / 105,163.84-145,125-57,417.04

Finding the Fourth Proportional to 105,163.84, 145,125 and 57,417.04

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Solution

The fourth proportional to 105,163.84, 145,125 and 57,417.04 is: 79,234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,163.84 : 145,125 = 57,417.04 : x
  2. Step 2: Convert to fraction form
    105,163.84/145,125 = 57,417.04/x
  3. Step 3: Cross multiply
    105,163.84x = 145,125 × 57,417.04
  4. Step 4: Simplify right side
    105,163.84x = 8,332,647,930
  5. Step 5: Solve for x
    x = 8,332,647,930/105,163.84
  6. Step 6: Final answer
    x = 79,234.92

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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.