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Finding the Fourth Proportional to 158,052.11, 218,111.78 and 86,432.11

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Solution

The fourth proportional to 158,052.11, 218,111.78 and 86,432.11 is: 119,276.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,052.11 : 218,111.78 = 86,432.11 : x
  2. Step 2: Convert to fraction form
    158,052.11/218,111.78 = 86,432.11/x
  3. Step 3: Cross multiply
    158,052.11x = 218,111.78 × 86,432.11
  4. Step 4: Simplify right side
    158,052.11x = 18,851,861,361.26
  5. Step 5: Solve for x
    x = 18,851,861,361.26/158,052.11
  6. Step 6: Final answer
    x = 119,276.24

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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.