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Finding the Fourth Proportional to 158,460.16, 218,677.44 and 86,839.60

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Solution

The fourth proportional to 158,460.16, 218,677.44 and 86,839.60 is: 119,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,460.16 : 218,677.44 = 86,839.60 : x
  2. Step 2: Convert to fraction form
    158,460.16/218,677.44 = 86,839.60/x
  3. Step 3: Cross multiply
    158,460.16x = 218,677.44 × 86,839.60
  4. Step 4: Simplify right side
    158,460.16x = 18,989,861,418.62
  5. Step 5: Solve for x
    x = 18,989,861,418.62/158,460.16
  6. Step 6: Final answer
    x = 119,839.97

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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.