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Finding the Fourth Proportional to 180,401.43, 270,596.57 and 85,699.79

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Solution

The fourth proportional to 180,401.43, 270,596.57 and 85,699.79 is: 128,547.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,401.43 : 270,596.57 = 85,699.79 : x
  2. Step 2: Convert to fraction form
    180,401.43/270,596.57 = 85,699.79/x
  3. Step 3: Cross multiply
    180,401.43x = 270,596.57 × 85,699.79
  4. Step 4: Simplify right side
    180,401.43x = 23,190,067,442.24
  5. Step 5: Solve for x
    x = 23,190,067,442.24/180,401.43
  6. Step 6: Final answer
    x = 128,547.03

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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.