Home / 105,474.11-145,503.92-65,173.37

Finding the Fourth Proportional to 105,474.11, 145,503.92 and 65,173.37

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Solution

The fourth proportional to 105,474.11, 145,503.92 and 65,173.37 is: 89,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,474.11 : 145,503.92 = 65,173.37 : x
  2. Step 2: Convert to fraction form
    105,474.11/145,503.92 = 65,173.37/x
  3. Step 3: Cross multiply
    105,474.11x = 145,503.92 × 65,173.37
  4. Step 4: Simplify right side
    105,474.11x = 9,482,980,250.02
  5. Step 5: Solve for x
    x = 9,482,980,250.02/105,474.11
  6. Step 6: Final answer
    x = 89,908.14

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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.