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Finding the Fourth Proportional to 113,840.60, 157,226.90 and 88,650

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Solution

The fourth proportional to 113,840.60, 157,226.90 and 88,650 is: 122,435.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,840.60 : 157,226.90 = 88,650 : x
  2. Step 2: Convert to fraction form
    113,840.60/157,226.90 = 88,650/x
  3. Step 3: Cross multiply
    113,840.60x = 157,226.90 × 88,650
  4. Step 4: Simplify right side
    113,840.60x = 13,938,164,241.75
  5. Step 5: Solve for x
    x = 13,938,164,241.75/113,840.60
  6. Step 6: Final answer
    x = 122,435.80

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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.