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Finding the Fourth Proportional to 158,168.48, 218,272.26 and 86,548.49

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Solution

The fourth proportional to 158,168.48, 218,272.26 and 86,548.49 is: 119,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,168.48 : 218,272.26 = 86,548.49 : x
  2. Step 2: Convert to fraction form
    158,168.48/218,272.26 = 86,548.49/x
  3. Step 3: Cross multiply
    158,168.48x = 218,272.26 × 86,548.49
  4. Step 4: Simplify right side
    158,168.48x = 18,891,133,420.53
  5. Step 5: Solve for x
    x = 18,891,133,420.53/158,168.48
  6. Step 6: Final answer
    x = 119,436.78

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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.