Home / 105,116.60-145,181.58-76,563.48

Finding the Fourth Proportional to 105,116.60, 145,181.58 and 76,563.48

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Solution

The fourth proportional to 105,116.60, 145,181.58 and 76,563.48 is: 105,745.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,116.60 : 145,181.58 = 76,563.48 : x
  2. Step 2: Convert to fraction form
    105,116.60/145,181.58 = 76,563.48/x
  3. Step 3: Cross multiply
    105,116.60x = 145,181.58 × 76,563.48
  4. Step 4: Simplify right side
    105,116.60x = 11,115,606,996.70
  5. Step 5: Solve for x
    x = 11,115,606,996.70/105,116.60
  6. Step 6: Final answer
    x = 105,745.50

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1.5x scale

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.