Home / 105,102.24-145,040.31-57,354.54

Finding the Fourth Proportional to 105,102.24, 145,040.31 and 57,354.54

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Solution

The fourth proportional to 105,102.24, 145,040.31 and 57,354.54 is: 79,148.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,102.24 : 145,040.31 = 57,354.54 : x
  2. Step 2: Convert to fraction form
    105,102.24/145,040.31 = 57,354.54/x
  3. Step 3: Cross multiply
    105,102.24x = 145,040.31 × 57,354.54
  4. Step 4: Simplify right side
    105,102.24x = 8,318,720,261.51
  5. Step 5: Solve for x
    x = 8,318,720,261.51/105,102.24
  6. Step 6: Final answer
    x = 79,148.84

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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.