Home / 145,318.38-217,990.08-40,137.36

Finding the Fourth Proportional to 145,318.38, 217,990.08 and 40,137.36

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Solution

The fourth proportional to 145,318.38, 217,990.08 and 40,137.36 is: 60,209.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,318.38 : 217,990.08 = 40,137.36 : x
  2. Step 2: Convert to fraction form
    145,318.38/217,990.08 = 40,137.36/x
  3. Step 3: Cross multiply
    145,318.38x = 217,990.08 × 40,137.36
  4. Step 4: Simplify right side
    145,318.38x = 8,749,546,317.39
  5. Step 5: Solve for x
    x = 8,749,546,317.39/145,318.38
  6. Step 6: Final answer
    x = 60,209.50

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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.