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Finding the Fourth Proportional to 105,606.34, 158,409.83 and 26,720.55

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Solution

The fourth proportional to 105,606.34, 158,409.83 and 26,720.55 is: 40,080.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,606.34 : 158,409.83 = 26,720.55 : x
  2. Step 2: Convert to fraction form
    105,606.34/158,409.83 = 26,720.55/x
  3. Step 3: Cross multiply
    105,606.34x = 158,409.83 × 26,720.55
  4. Step 4: Simplify right side
    105,606.34x = 4,232,797,849.81
  5. Step 5: Solve for x
    x = 4,232,797,849.81/105,606.34
  6. Step 6: Final answer
    x = 40,080.91

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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.