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Finding the Third Proportional to 70,038.75 and 105,130.50

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Solution

The third proportional to 70,038.75 and 105,130.50 is: 157,804.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,038.75 : 105,130.50 = 105,130.50 : x
  2. Step 2: Convert to fraction form
    70,038.75/105,130.50 = 105,130.50/x
  3. Step 3: Cross multiply
    70,038.75x = 105,130.50 × 105,130.50
  4. Step 4: Simplify right side
    70,038.75x = 11,052,422,030.25
  5. Step 5: Solve for x
    x = 11,052,422,030.25/70,038.75
  6. Step 6: Final answer
    x = 157,804.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.