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Finding the Fourth Proportional to 150,705.75, 207,973.94 and 83,637.75

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Solution

The fourth proportional to 150,705.75, 207,973.94 and 83,637.75 is: 115,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,705.75 : 207,973.94 = 83,637.75 : x
  2. Step 2: Convert to fraction form
    150,705.75/207,973.94 = 83,637.75/x
  3. Step 3: Cross multiply
    150,705.75x = 207,973.94 × 83,637.75
  4. Step 4: Simplify right side
    150,705.75x = 17,394,472,400.24
  5. Step 5: Solve for x
    x = 17,394,472,400.24/150,705.75
  6. Step 6: Final answer
    x = 115,420.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.