Home / 105,205.24-145,180.99-57,458.78

Finding the Fourth Proportional to 105,205.24, 145,180.99 and 57,458.78

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Solution

The fourth proportional to 105,205.24, 145,180.99 and 57,458.78 is: 79,291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,205.24 : 145,180.99 = 57,458.78 : x
  2. Step 2: Convert to fraction form
    105,205.24/145,180.99 = 57,458.78/x
  3. Step 3: Cross multiply
    105,205.24x = 145,180.99 × 57,458.78
  4. Step 4: Simplify right side
    105,205.24x = 8,341,922,454.94
  5. Step 5: Solve for x
    x = 8,341,922,454.94/105,205.24
  6. Step 6: Final answer
    x = 79,291.89

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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.