Home / 208,581.04-312,685.96-75,431.70

Finding the Fourth Proportional to 208,581.04, 312,685.96 and 75,431.70

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Solution

The fourth proportional to 208,581.04, 312,685.96 and 75,431.70 is: 113,080.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,581.04 : 312,685.96 = 75,431.70 : x
  2. Step 2: Convert to fraction form
    208,581.04/312,685.96 = 75,431.70/x
  3. Step 3: Cross multiply
    208,581.04x = 312,685.96 × 75,431.70
  4. Step 4: Simplify right side
    208,581.04x = 23,586,433,528.93
  5. Step 5: Solve for x
    x = 23,586,433,528.93/208,581.04
  6. Step 6: Final answer
    x = 113,080.43

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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.