Home / 215,090.79-322,636.14-102,429.42

Finding the Fourth Proportional to 215,090.79, 322,636.14 and 102,429.42

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Solution

The fourth proportional to 215,090.79, 322,636.14 and 102,429.42 is: 153,644.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,090.79 : 322,636.14 = 102,429.42 : x
  2. Step 2: Convert to fraction form
    215,090.79/322,636.14 = 102,429.42/x
  3. Step 3: Cross multiply
    215,090.79x = 322,636.14 × 102,429.42
  4. Step 4: Simplify right side
    215,090.79x = 33,047,432,691.24
  5. Step 5: Solve for x
    x = 33,047,432,691.24/215,090.79
  6. Step 6: Final answer
    x = 153,644.11

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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.