Home / 121,215,213.20-181,822,819.80-84,864,648.80

Finding the Fourth Proportional to 121,215,213.20, 181,822,819.80 and 84,864,648.80

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Solution

The fourth proportional to 121,215,213.20, 181,822,819.80 and 84,864,648.80 is: 127,296,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,215,213.20 : 181,822,819.80 = 84,864,648.80 : x
  2. Step 2: Convert to fraction form
    121,215,213.20/181,822,819.80 = 84,864,648.80/x
  3. Step 3: Cross multiply
    121,215,213.20x = 181,822,819.80 × 84,864,648.80
  4. Step 4: Simplify right side
    121,215,213.20x = 15,430,329,746,152,686
  5. Step 5: Solve for x
    x = 15,430,329,746,152,686/121,215,213.20
  6. Step 6: Final answer
    x = 127,296,973.20

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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.