Home / 78,161.64-117,241.40-18,997.12

Finding the Fourth Proportional to 78,161.64, 117,241.40 and 18,997.12

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Solution

The fourth proportional to 78,161.64, 117,241.40 and 18,997.12 is: 28,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.64 : 117,241.40 = 18,997.12 : x
  2. Step 2: Convert to fraction form
    78,161.64/117,241.40 = 18,997.12/x
  3. Step 3: Cross multiply
    78,161.64x = 117,241.40 × 18,997.12
  4. Step 4: Simplify right side
    78,161.64x = 2,227,248,944.77
  5. Step 5: Solve for x
    x = 2,227,248,944.77/78,161.64
  6. Step 6: Final answer
    x = 28,495.42

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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.