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Finding the Third Proportional to 77,688 and 170,140.50

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Solution

The third proportional to 77,688 and 170,140.50 is: 372,615.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,688 : 170,140.50 = 170,140.50 : x
  2. Step 2: Convert to fraction form
    77,688/170,140.50 = 170,140.50/x
  3. Step 3: Cross multiply
    77,688x = 170,140.50 × 170,140.50
  4. Step 4: Simplify right side
    77,688x = 28,947,789,740.25
  5. Step 5: Solve for x
    x = 28,947,789,740.25/77,688
  6. Step 6: Final answer
    x = 372,615.97

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.