Home / 105,113.54-145,057.12-57,367.90

Finding the Fourth Proportional to 105,113.54, 145,057.12 and 57,367.90

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Solution

The fourth proportional to 105,113.54, 145,057.12 and 57,367.90 is: 79,167.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,113.54 : 145,057.12 = 57,367.90 : x
  2. Step 2: Convert to fraction form
    105,113.54/145,057.12 = 57,367.90/x
  3. Step 3: Cross multiply
    105,113.54x = 145,057.12 × 57,367.90
  4. Step 4: Simplify right side
    105,113.54x = 8,321,622,354.45
  5. Step 5: Solve for x
    x = 8,321,622,354.45/105,113.54
  6. Step 6: Final answer
    x = 79,167.94

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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.