Home / 105,126.36-145,073.32-57,379.28

Finding the Fourth Proportional to 105,126.36, 145,073.32 and 57,379.28

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Solution

The fourth proportional to 105,126.36, 145,073.32 and 57,379.28 is: 79,182.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,126.36 : 145,073.32 = 57,379.28 : x
  2. Step 2: Convert to fraction form
    105,126.36/145,073.32 = 57,379.28/x
  3. Step 3: Cross multiply
    105,126.36x = 145,073.32 × 57,379.28
  4. Step 4: Simplify right side
    105,126.36x = 8,324,202,648.81
  5. Step 5: Solve for x
    x = 8,324,202,648.81/105,126.36
  6. Step 6: Final answer
    x = 79,182.83

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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.