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Finding the Fourth Proportional to 150,638.88, 207,880.56 and 83,570.88

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Solution

The fourth proportional to 150,638.88, 207,880.56 and 83,570.88 is: 115,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,638.88 : 207,880.56 = 83,570.88 : x
  2. Step 2: Convert to fraction form
    150,638.88/207,880.56 = 83,570.88/x
  3. Step 3: Cross multiply
    150,638.88x = 207,880.56 × 83,570.88
  4. Step 4: Simplify right side
    150,638.88x = 17,372,761,334.09
  5. Step 5: Solve for x
    x = 17,372,761,334.09/150,638.88
  6. Step 6: Final answer
    x = 115,327.21

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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.