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Finding the Fourth Proportional to 245,155.26, 338,312.25 and 137,723.03

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Solution

The fourth proportional to 245,155.26, 338,312.25 and 137,723.03 is: 190,056.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,155.26 : 338,312.25 = 137,723.03 : x
  2. Step 2: Convert to fraction form
    245,155.26/338,312.25 = 137,723.03/x
  3. Step 3: Cross multiply
    245,155.26x = 338,312.25 × 137,723.03
  4. Step 4: Simplify right side
    245,155.26x = 46,593,388,156.12
  5. Step 5: Solve for x
    x = 46,593,388,156.12/245,155.26
  6. Step 6: Final answer
    x = 190,056.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.