Home / 124,638.09-186,981.78-45,753

Finding the Fourth Proportional to 124,638.09, 186,981.78 and 45,753

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Solution

The fourth proportional to 124,638.09, 186,981.78 and 45,753 is: 68,638.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,638.09 : 186,981.78 = 45,753 : x
  2. Step 2: Convert to fraction form
    124,638.09/186,981.78 = 45,753/x
  3. Step 3: Cross multiply
    124,638.09x = 186,981.78 × 45,753
  4. Step 4: Simplify right side
    124,638.09x = 8,554,977,380.34
  5. Step 5: Solve for x
    x = 8,554,977,380.34/124,638.09
  6. Step 6: Final answer
    x = 68,638.55

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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.