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Finding the Fourth Proportional to 245,085.10, 367,627.65 and 78,873.10

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Solution

The fourth proportional to 245,085.10, 367,627.65 and 78,873.10 is: 118,309.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,085.10 : 367,627.65 = 78,873.10 : x
  2. Step 2: Convert to fraction form
    245,085.10/367,627.65 = 78,873.10/x
  3. Step 3: Cross multiply
    245,085.10x = 367,627.65 × 78,873.10
  4. Step 4: Simplify right side
    245,085.10x = 28,995,932,401.22
  5. Step 5: Solve for x
    x = 28,995,932,401.22/245,085.10
  6. Step 6: Final answer
    x = 118,309.65

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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.