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Finding the Fourth Proportional to 158,361.64, 218,538.42 and 86,741.56

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Solution

The fourth proportional to 158,361.64, 218,538.42 and 86,741.56 is: 119,703.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,361.64 : 218,538.42 = 86,741.56 : x
  2. Step 2: Convert to fraction form
    158,361.64/218,538.42 = 86,741.56/x
  3. Step 3: Cross multiply
    158,361.64x = 218,538.42 × 86,741.56
  4. Step 4: Simplify right side
    158,361.64x = 18,956,363,470.74
  5. Step 5: Solve for x
    x = 18,956,363,470.74/158,361.64
  6. Step 6: Final answer
    x = 119,703.00

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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.