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Finding the Fourth Proportional to 158,361.63, 218,539.14 and 86,742.84

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Solution

The fourth proportional to 158,361.63, 218,539.14 and 86,742.84 is: 119,705.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,361.63 : 218,539.14 = 86,742.84 : x
  2. Step 2: Convert to fraction form
    158,361.63/218,539.14 = 86,742.84/x
  3. Step 3: Cross multiply
    158,361.63x = 218,539.14 × 86,742.84
  4. Step 4: Simplify right side
    158,361.63x = 18,956,705,654.76
  5. Step 5: Solve for x
    x = 18,956,705,654.76/158,361.63
  6. Step 6: Final answer
    x = 119,705.17

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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.