Home / 129,362.12-193,965.38-49,405.40

Finding the Fourth Proportional to 129,362.12, 193,965.38 and 49,405.40

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Solution

The fourth proportional to 129,362.12, 193,965.38 and 49,405.40 is: 74,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,362.12 : 193,965.38 = 49,405.40 : x
  2. Step 2: Convert to fraction form
    129,362.12/193,965.38 = 49,405.40/x
  3. Step 3: Cross multiply
    129,362.12x = 193,965.38 × 49,405.40
  4. Step 4: Simplify right side
    129,362.12x = 9,582,937,185.05
  5. Step 5: Solve for x
    x = 9,582,937,185.05/129,362.12
  6. Step 6: Final answer
    x = 74,078.39

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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.