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Finding the Fourth Proportional to 80,712,255,998.80, 121,068,383,998.20 and 80,712,255,998.80

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Solution

The fourth proportional to 80,712,255,998.80, 121,068,383,998.20 and 80,712,255,998.80 is: 121,068,383,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,712,255,998.80 : 121,068,383,998.20 = 80,712,255,998.80 : x
  2. Step 2: Convert to fraction form
    80,712,255,998.80/121,068,383,998.20 = 80,712,255,998.80/x
  3. Step 3: Cross multiply
    80,712,255,998.80x = 121,068,383,998.20 × 80,712,255,998.80
  4. Step 4: Simplify right side
    80,712,255,998.80x = 9,771,702,402,623,740,051,456
  5. Step 5: Solve for x
    x = 9,771,702,402,623,740,051,456/80,712,255,998.80
  6. Step 6: Final answer
    x = 121,068,383,998.20

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1.5x scale

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.