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Finding the Fourth Proportional to 124,014.87, 186,022.31 and 39,783.78

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Solution

The fourth proportional to 124,014.87, 186,022.31 and 39,783.78 is: 59,675.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,014.87 : 186,022.31 = 39,783.78 : x
  2. Step 2: Convert to fraction form
    124,014.87/186,022.31 = 39,783.78/x
  3. Step 3: Cross multiply
    124,014.87x = 186,022.31 × 39,783.78
  4. Step 4: Simplify right side
    124,014.87x = 7,400,670,457.21
  5. Step 5: Solve for x
    x = 7,400,670,457.21/124,014.87
  6. Step 6: Final answer
    x = 59,675.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.