Home / 285,948.87-428,644.38-136,148.91

Finding the Fourth Proportional to 285,948.87, 428,644.38 and 136,148.91

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Solution

The fourth proportional to 285,948.87, 428,644.38 and 136,148.91 is: 204,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,948.87 : 428,644.38 = 136,148.91 : x
  2. Step 2: Convert to fraction form
    285,948.87/428,644.38 = 136,148.91/x
  3. Step 3: Cross multiply
    285,948.87x = 428,644.38 × 136,148.91
  4. Step 4: Simplify right side
    285,948.87x = 58,359,465,114.63
  5. Step 5: Solve for x
    x = 58,359,465,114.63/285,948.87
  6. Step 6: Final answer
    x = 204,090.56

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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.