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Finding the Fourth Proportional to 145,287.41, 200,415.67 and 135,012.43

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Solution

The fourth proportional to 145,287.41, 200,415.67 and 135,012.43 is: 186,241.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,287.41 : 200,415.67 = 135,012.43 : x
  2. Step 2: Convert to fraction form
    145,287.41/200,415.67 = 135,012.43/x
  3. Step 3: Cross multiply
    145,287.41x = 200,415.67 × 135,012.43
  4. Step 4: Simplify right side
    145,287.41x = 27,058,606,616.78
  5. Step 5: Solve for x
    x = 27,058,606,616.78/145,287.41
  6. Step 6: Final answer
    x = 186,241.92

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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.