Home / 309,795.14-464,603.34-85,162.90

Finding the Fourth Proportional to 309,795.14, 464,603.34 and 85,162.90

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Solution

The fourth proportional to 309,795.14, 464,603.34 and 85,162.90 is: 127,719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,795.14 : 464,603.34 = 85,162.90 : x
  2. Step 2: Convert to fraction form
    309,795.14/464,603.34 = 85,162.90/x
  3. Step 3: Cross multiply
    309,795.14x = 464,603.34 × 85,162.90
  4. Step 4: Simplify right side
    309,795.14x = 39,566,967,784.09
  5. Step 5: Solve for x
    x = 39,566,967,784.09/309,795.14
  6. Step 6: Final answer
    x = 127,719.78

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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.