Home / 105,380.82-145,439.58-59,449.80

Finding the Fourth Proportional to 105,380.82, 145,439.58 and 59,449.80

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Solution

The fourth proportional to 105,380.82, 145,439.58 and 59,449.80 is: 82,048.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,380.82 : 145,439.58 = 59,449.80 : x
  2. Step 2: Convert to fraction form
    105,380.82/145,439.58 = 59,449.80/x
  3. Step 3: Cross multiply
    105,380.82x = 145,439.58 × 59,449.80
  4. Step 4: Simplify right side
    105,380.82x = 8,646,353,645.84
  5. Step 5: Solve for x
    x = 8,646,353,645.84/105,380.82
  6. Step 6: Final answer
    x = 82,048.65

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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.