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Finding the Fourth Proportional to 141,477.12, 212,486.40 and 88,992

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Solution

The fourth proportional to 141,477.12, 212,486.40 and 88,992 is: 133,658.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,477.12 : 212,486.40 = 88,992 : x
  2. Step 2: Convert to fraction form
    141,477.12/212,486.40 = 88,992/x
  3. Step 3: Cross multiply
    141,477.12x = 212,486.40 × 88,992
  4. Step 4: Simplify right side
    141,477.12x = 18,909,589,708.80
  5. Step 5: Solve for x
    x = 18,909,589,708.80/141,477.12
  6. Step 6: Final answer
    x = 133,658.29

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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.