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Finding the Fourth Proportional to 105,604.88, 158,655.04 and 99,626.96

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Solution

The fourth proportional to 105,604.88, 158,655.04 and 99,626.96 is: 149,674.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,604.88 : 158,655.04 = 99,626.96 : x
  2. Step 2: Convert to fraction form
    105,604.88/158,655.04 = 99,626.96/x
  3. Step 3: Cross multiply
    105,604.88x = 158,655.04 × 99,626.96
  4. Step 4: Simplify right side
    105,604.88x = 15,806,319,323.88
  5. Step 5: Solve for x
    x = 15,806,319,323.88/105,604.88
  6. Step 6: Final answer
    x = 149,674.14

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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.