Home / 205,413,623.49-308,120,416.53-90,398,165.79

Finding the Fourth Proportional to 205,413,623.49, 308,120,416.53 and 90,398,165.79

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Solution

The fourth proportional to 205,413,623.49, 308,120,416.53 and 90,398,165.79 is: 135,597,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,413,623.49 : 308,120,416.53 = 90,398,165.79 : x
  2. Step 2: Convert to fraction form
    205,413,623.49/308,120,416.53 = 90,398,165.79/x
  3. Step 3: Cross multiply
    205,413,623.49x = 308,120,416.53 × 90,398,165.79
  4. Step 4: Simplify right side
    205,413,623.49x = 27,853,520,496,762,796
  5. Step 5: Solve for x
    x = 27,853,520,496,762,796/205,413,623.49
  6. Step 6: Final answer
    x = 135,597,240.45

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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.