Home / 105,279.36-145,271.52-67,604.64

Finding the Fourth Proportional to 105,279.36, 145,271.52 and 67,604.64

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Solution

The fourth proportional to 105,279.36, 145,271.52 and 67,604.64 is: 93,285.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,279.36 : 145,271.52 = 67,604.64 : x
  2. Step 2: Convert to fraction form
    105,279.36/145,271.52 = 67,604.64/x
  3. Step 3: Cross multiply
    105,279.36x = 145,271.52 × 67,604.64
  4. Step 4: Simplify right side
    105,279.36x = 9,821,028,811.85
  5. Step 5: Solve for x
    x = 9,821,028,811.85/105,279.36
  6. Step 6: Final answer
    x = 93,285.42

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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.