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Finding the Third Proportional to 66,688.50 and 157,424.50

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Solution

The third proportional to 66,688.50 and 157,424.50 is: 371,615.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,688.50 : 157,424.50 = 157,424.50 : x
  2. Step 2: Convert to fraction form
    66,688.50/157,424.50 = 157,424.50/x
  3. Step 3: Cross multiply
    66,688.50x = 157,424.50 × 157,424.50
  4. Step 4: Simplify right side
    66,688.50x = 24,782,473,200.25
  5. Step 5: Solve for x
    x = 24,782,473,200.25/66,688.50
  6. Step 6: Final answer
    x = 371,615.39

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.