Home / 172,415,857.40-258,623,786.10-165,613,412.60

Finding the Fourth Proportional to 172,415,857.40, 258,623,786.10 and 165,613,412.60

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Solution

The fourth proportional to 172,415,857.40, 258,623,786.10 and 165,613,412.60 is: 248,420,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,415,857.40 : 258,623,786.10 = 165,613,412.60 : x
  2. Step 2: Convert to fraction form
    172,415,857.40/258,623,786.10 = 165,613,412.60/x
  3. Step 3: Cross multiply
    172,415,857.40x = 258,623,786.10 × 165,613,412.60
  4. Step 4: Simplify right side
    172,415,857.40x = 42,831,567,795,553,440
  5. Step 5: Solve for x
    x = 42,831,567,795,553,440/172,415,857.40
  6. Step 6: Final answer
    x = 248,420,118.90

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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.