Home / 161,755,319.80-242,632,979.70-80,965,790.20

Finding the Fourth Proportional to 161,755,319.80, 242,632,979.70 and 80,965,790.20

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Solution

The fourth proportional to 161,755,319.80, 242,632,979.70 and 80,965,790.20 is: 121,448,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,755,319.80 : 242,632,979.70 = 80,965,790.20 : x
  2. Step 2: Convert to fraction form
    161,755,319.80/242,632,979.70 = 80,965,790.20/x
  3. Step 3: Cross multiply
    161,755,319.80x = 242,632,979.70 × 80,965,790.20
  4. Step 4: Simplify right side
    161,755,319.80x = 19,644,970,929,991,060
  5. Step 5: Solve for x
    x = 19,644,970,929,991,060/161,755,319.80
  6. Step 6: Final answer
    x = 121,448,685.30

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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.