Home / 105,093.72-145,032-57,347.88

Finding the Fourth Proportional to 105,093.72, 145,032 and 57,347.88

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Solution

The fourth proportional to 105,093.72, 145,032 and 57,347.88 is: 79,141.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,093.72 : 145,032 = 57,347.88 : x
  2. Step 2: Convert to fraction form
    105,093.72/145,032 = 57,347.88/x
  3. Step 3: Cross multiply
    105,093.72x = 145,032 × 57,347.88
  4. Step 4: Simplify right side
    105,093.72x = 8,317,277,732.16
  5. Step 5: Solve for x
    x = 8,317,277,732.16/105,093.72
  6. Step 6: Final answer
    x = 79,141.53

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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.