Home / 208,117.62-312,050.01-81,606.30

Finding the Fourth Proportional to 208,117.62, 312,050.01 and 81,606.30

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Solution

The fourth proportional to 208,117.62, 312,050.01 and 81,606.30 is: 122,359.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,117.62 : 312,050.01 = 81,606.30 : x
  2. Step 2: Convert to fraction form
    208,117.62/312,050.01 = 81,606.30/x
  3. Step 3: Cross multiply
    208,117.62x = 312,050.01 × 81,606.30
  4. Step 4: Simplify right side
    208,117.62x = 25,465,246,731.06
  5. Step 5: Solve for x
    x = 25,465,246,731.06/208,117.62
  6. Step 6: Final answer
    x = 122,359.88

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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.