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Finding the Third Proportional to 69,484.50 and 149,985

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Solution

The third proportional to 69,484.50 and 149,985 is: 323,748.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,484.50 : 149,985 = 149,985 : x
  2. Step 2: Convert to fraction form
    69,484.50/149,985 = 149,985/x
  3. Step 3: Cross multiply
    69,484.50x = 149,985 × 149,985
  4. Step 4: Simplify right side
    69,484.50x = 22,495,500,225
  5. Step 5: Solve for x
    x = 22,495,500,225/69,484.50
  6. Step 6: Final answer
    x = 323,748.47

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.