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Finding the Fourth Proportional to 157,241.35, 216,993.13 and 85,621.35

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Solution

The fourth proportional to 157,241.35, 216,993.13 and 85,621.35 is: 118,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,241.35 : 216,993.13 = 85,621.35 : x
  2. Step 2: Convert to fraction form
    157,241.35/216,993.13 = 85,621.35/x
  3. Step 3: Cross multiply
    157,241.35x = 216,993.13 × 85,621.35
  4. Step 4: Simplify right side
    157,241.35x = 18,579,245,331.00
  5. Step 5: Solve for x
    x = 18,579,245,331.00/157,241.35
  6. Step 6: Final answer
    x = 118,157.50

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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.