Home / 208,112,612.78-287,172,234.62-115,269,870.08

Finding the Fourth Proportional to 208,112,612.78, 287,172,234.62 and 115,269,870.08

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Solution

The fourth proportional to 208,112,612.78, 287,172,234.62 and 115,269,870.08 is: 159,059,586.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,112,612.78 : 287,172,234.62 = 115,269,870.08 : x
  2. Step 2: Convert to fraction form
    208,112,612.78/287,172,234.62 = 115,269,870.08/x
  3. Step 3: Cross multiply
    208,112,612.78x = 287,172,234.62 × 115,269,870.08
  4. Step 4: Simplify right side
    208,112,612.78x = 33,102,306,174,654,328
  5. Step 5: Solve for x
    x = 33,102,306,174,654,328/208,112,612.78
  6. Step 6: Final answer
    x = 159,059,586.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.