Home / 208,171,542.97-287,276,731.21-115,352,050.78

Finding the Fourth Proportional to 208,171,542.97, 287,276,731.21 and 115,352,050.78

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Solution

The fourth proportional to 208,171,542.97, 287,276,731.21 and 115,352,050.78 is: 159,185,831.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,171,542.97 : 287,276,731.21 = 115,352,050.78 : x
  2. Step 2: Convert to fraction form
    208,171,542.97/287,276,731.21 = 115,352,050.78/x
  3. Step 3: Cross multiply
    208,171,542.97x = 287,276,731.21 × 115,352,050.78
  4. Step 4: Simplify right side
    208,171,542.97x = 33,137,960,086,448,328
  5. Step 5: Solve for x
    x = 33,137,960,086,448,328/208,171,542.97
  6. Step 6: Final answer
    x = 159,185,831.14

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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.