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Finding the Fourth Proportional to 68,128,210.70, 102,192,316.05 and 68,128,210.70

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Solution

The fourth proportional to 68,128,210.70, 102,192,316.05 and 68,128,210.70 is: 102,192,316.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128,210.70 : 102,192,316.05 = 68,128,210.70 : x
  2. Step 2: Convert to fraction form
    68,128,210.70/102,192,316.05 = 68,128,210.70/x
  3. Step 3: Cross multiply
    68,128,210.70x = 102,192,316.05 × 68,128,210.70
  4. Step 4: Simplify right side
    68,128,210.70x = 6,962,179,639,775,392
  5. Step 5: Solve for x
    x = 6,962,179,639,775,392/68,128,210.70
  6. Step 6: Final answer
    x = 102,192,316.05

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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.