Home / 165,143.21-247,685.65-65,270.21

Finding the Fourth Proportional to 165,143.21, 247,685.65 and 65,270.21

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Solution

The fourth proportional to 165,143.21, 247,685.65 and 65,270.21 is: 97,893.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,143.21 : 247,685.65 = 65,270.21 : x
  2. Step 2: Convert to fraction form
    165,143.21/247,685.65 = 65,270.21/x
  3. Step 3: Cross multiply
    165,143.21x = 247,685.65 × 65,270.21
  4. Step 4: Simplify right side
    165,143.21x = 16,166,492,987.88
  5. Step 5: Solve for x
    x = 16,166,492,987.88/165,143.21
  6. Step 6: Final answer
    x = 97,893.78

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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.