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Finding the Fourth Proportional to 161,755,326.80, 242,632,990.20 and 80,965,797.20

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Solution

The fourth proportional to 161,755,326.80, 242,632,990.20 and 80,965,797.20 is: 121,448,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,755,326.80 : 242,632,990.20 = 80,965,797.20 : x
  2. Step 2: Convert to fraction form
    161,755,326.80/242,632,990.20 = 80,965,797.20/x
  3. Step 3: Cross multiply
    161,755,326.80x = 242,632,990.20 × 80,965,797.20
  4. Step 4: Simplify right side
    161,755,326.80x = 19,644,973,478,562,788
  5. Step 5: Solve for x
    x = 19,644,973,478,562,788/161,755,326.80
  6. Step 6: Final answer
    x = 121,448,695.80

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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.