Home / 105,295.20-145,206.82-68,942.40

Finding the Fourth Proportional to 105,295.20, 145,206.82 and 68,942.40

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Solution

The fourth proportional to 105,295.20, 145,206.82 and 68,942.40 is: 95,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,295.20 : 145,206.82 = 68,942.40 : x
  2. Step 2: Convert to fraction form
    105,295.20/145,206.82 = 68,942.40/x
  3. Step 3: Cross multiply
    105,295.20x = 145,206.82 × 68,942.40
  4. Step 4: Simplify right side
    105,295.20x = 10,010,906,667.17
  5. Step 5: Solve for x
    x = 10,010,906,667.17/105,295.20
  6. Step 6: Final answer
    x = 95,074.67

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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.