Home / 124,387.80-186,636.36-45,513.78

Finding the Fourth Proportional to 124,387.80, 186,636.36 and 45,513.78

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Solution

The fourth proportional to 124,387.80, 186,636.36 and 45,513.78 is: 68,290.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,387.80 : 186,636.36 = 45,513.78 : x
  2. Step 2: Convert to fraction form
    124,387.80/186,636.36 = 45,513.78/x
  3. Step 3: Cross multiply
    124,387.80x = 186,636.36 × 45,513.78
  4. Step 4: Simplify right side
    124,387.80x = 8,494,526,229.04
  5. Step 5: Solve for x
    x = 8,494,526,229.04/124,387.80
  6. Step 6: Final answer
    x = 68,290.67

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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.