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Finding the Fourth Proportional to 110,157.78, 152,018.23 and 62,420.43

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Solution

The fourth proportional to 110,157.78, 152,018.23 and 62,420.43 is: 86,140.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,157.78 : 152,018.23 = 62,420.43 : x
  2. Step 2: Convert to fraction form
    110,157.78/152,018.23 = 62,420.43/x
  3. Step 3: Cross multiply
    110,157.78x = 152,018.23 × 62,420.43
  4. Step 4: Simplify right side
    110,157.78x = 9,489,043,284.44
  5. Step 5: Solve for x
    x = 9,489,043,284.44/110,157.78
  6. Step 6: Final answer
    x = 86,140.47

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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.