Home / 105,853.93-146,078.57-57,455.89

Finding the Fourth Proportional to 105,853.93, 146,078.57 and 57,455.89

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Solution

The fourth proportional to 105,853.93, 146,078.57 and 57,455.89 is: 79,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,853.93 : 146,078.57 = 57,455.89 : x
  2. Step 2: Convert to fraction form
    105,853.93/146,078.57 = 57,455.89/x
  3. Step 3: Cross multiply
    105,853.93x = 146,078.57 × 57,455.89
  4. Step 4: Simplify right side
    105,853.93x = 8,393,074,643.99
  5. Step 5: Solve for x
    x = 8,393,074,643.99/105,853.93
  6. Step 6: Final answer
    x = 79,289.21

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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.