Home / 120,206.12-165,923.88-84,405.02

Finding the Fourth Proportional to 120,206.12, 165,923.88 and 84,405.02

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Solution

The fourth proportional to 120,206.12, 165,923.88 and 84,405.02 is: 116,506.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,206.12 : 165,923.88 = 84,405.02 : x
  2. Step 2: Convert to fraction form
    120,206.12/165,923.88 = 84,405.02/x
  3. Step 3: Cross multiply
    120,206.12x = 165,923.88 × 84,405.02
  4. Step 4: Simplify right side
    120,206.12x = 14,004,808,409.88
  5. Step 5: Solve for x
    x = 14,004,808,409.88/120,206.12
  6. Step 6: Final answer
    x = 116,506.62

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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.