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Finding the Third Proportional to 138,847.50 and 153,427.50

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Solution

The third proportional to 138,847.50 and 153,427.50 is: 169,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,847.50 : 153,427.50 = 153,427.50 : x
  2. Step 2: Convert to fraction form
    138,847.50/153,427.50 = 153,427.50/x
  3. Step 3: Cross multiply
    138,847.50x = 153,427.50 × 153,427.50
  4. Step 4: Simplify right side
    138,847.50x = 23,539,997,756.25
  5. Step 5: Solve for x
    x = 23,539,997,756.25/138,847.50
  6. Step 6: Final answer
    x = 169,538.51

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.