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Finding the Fourth Proportional to 105,436.51, 158,154.87 and 43,107.01

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Solution

The fourth proportional to 105,436.51, 158,154.87 and 43,107.01 is: 64,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,436.51 : 158,154.87 = 43,107.01 : x
  2. Step 2: Convert to fraction form
    105,436.51/158,154.87 = 43,107.01/x
  3. Step 3: Cross multiply
    105,436.51x = 158,154.87 × 43,107.01
  4. Step 4: Simplify right side
    105,436.51x = 6,817,583,562.64
  5. Step 5: Solve for x
    x = 6,817,583,562.64/105,436.51
  6. Step 6: Final answer
    x = 64,660.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.