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Finding the Fourth Proportional to 180,019.78, 248,442.15 and 103,563.70

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Solution

The fourth proportional to 180,019.78, 248,442.15 and 103,563.70 is: 142,926.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,019.78 : 248,442.15 = 103,563.70 : x
  2. Step 2: Convert to fraction form
    180,019.78/248,442.15 = 103,563.70/x
  3. Step 3: Cross multiply
    180,019.78x = 248,442.15 × 103,563.70
  4. Step 4: Simplify right side
    180,019.78x = 25,729,588,289.96
  5. Step 5: Solve for x
    x = 25,729,588,289.96/180,019.78
  6. Step 6: Final answer
    x = 142,926.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.