Home / 105,228.11-145,212.41-57,481.67

Finding the Fourth Proportional to 105,228.11, 145,212.41 and 57,481.67

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Solution

The fourth proportional to 105,228.11, 145,212.41 and 57,481.67 is: 79,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,228.11 : 145,212.41 = 57,481.67 : x
  2. Step 2: Convert to fraction form
    105,228.11/145,212.41 = 57,481.67/x
  3. Step 3: Cross multiply
    105,228.11x = 145,212.41 × 57,481.67
  4. Step 4: Simplify right side
    105,228.11x = 8,347,051,544.12
  5. Step 5: Solve for x
    x = 8,347,051,544.12/105,228.11
  6. Step 6: Final answer
    x = 79,323.40

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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.