Home / 204,401.30-306,612.07-78,017.81

Finding the Fourth Proportional to 204,401.30, 306,612.07 and 78,017.81

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Solution

The fourth proportional to 204,401.30, 306,612.07 and 78,017.81 is: 117,030.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,401.30 : 306,612.07 = 78,017.81 : x
  2. Step 2: Convert to fraction form
    204,401.30/306,612.07 = 78,017.81/x
  3. Step 3: Cross multiply
    204,401.30x = 306,612.07 × 78,017.81
  4. Step 4: Simplify right side
    204,401.30x = 23,921,200,492.86
  5. Step 5: Solve for x
    x = 23,921,200,492.86/204,401.30
  6. Step 6: Final answer
    x = 117,030.57

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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.