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Finding the Fourth Proportional to 139,788,201.12, 209,688,600.48 and 53,504,227.68

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Solution

The fourth proportional to 139,788,201.12, 209,688,600.48 and 53,504,227.68 is: 80,258,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,788,201.12 : 209,688,600.48 = 53,504,227.68 : x
  2. Step 2: Convert to fraction form
    139,788,201.12/209,688,600.48 = 53,504,227.68/x
  3. Step 3: Cross multiply
    139,788,201.12x = 209,688,600.48 × 53,504,227.68
  4. Step 4: Simplify right side
    139,788,201.12x = 11,219,226,621,982,476
  5. Step 5: Solve for x
    x = 11,219,226,621,982,476/139,788,201.12
  6. Step 6: Final answer
    x = 80,258,752.40

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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.