Home / 245,986.38-339,423.72-138,549.60

Finding the Fourth Proportional to 245,986.38, 339,423.72 and 138,549.60

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Solution

The fourth proportional to 245,986.38, 339,423.72 and 138,549.60 is: 191,177.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,986.38 : 339,423.72 = 138,549.60 : x
  2. Step 2: Convert to fraction form
    245,986.38/339,423.72 = 138,549.60/x
  3. Step 3: Cross multiply
    245,986.38x = 339,423.72 × 138,549.60
  4. Step 4: Simplify right side
    245,986.38x = 47,027,020,636.51
  5. Step 5: Solve for x
    x = 47,027,020,636.51/245,986.38
  6. Step 6: Final answer
    x = 191,177.34

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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.