Home / 207,961.90-312,000.45-137,977.90

Finding the Fourth Proportional to 207,961.90, 312,000.45 and 137,977.90

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Solution

The fourth proportional to 207,961.90, 312,000.45 and 137,977.90 is: 207,005.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,961.90 : 312,000.45 = 137,977.90 : x
  2. Step 2: Convert to fraction form
    207,961.90/312,000.45 = 137,977.90/x
  3. Step 3: Cross multiply
    207,961.90x = 312,000.45 × 137,977.90
  4. Step 4: Simplify right side
    207,961.90x = 43,049,166,890.06
  5. Step 5: Solve for x
    x = 43,049,166,890.06/207,961.90
  6. Step 6: Final answer
    x = 207,005.07

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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.