Home / 109,654,345.20-164,481,517.80-85,261,203.30

Finding the Fourth Proportional to 109,654,345.20, 164,481,517.80 and 85,261,203.30

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Solution

The fourth proportional to 109,654,345.20, 164,481,517.80 and 85,261,203.30 is: 127,891,804.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,654,345.20 : 164,481,517.80 = 85,261,203.30 : x
  2. Step 2: Convert to fraction form
    109,654,345.20/164,481,517.80 = 85,261,203.30/x
  3. Step 3: Cross multiply
    109,654,345.20x = 164,481,517.80 × 85,261,203.30
  4. Step 4: Simplify right side
    109,654,345.20x = 14,023,892,128,238,370
  5. Step 5: Solve for x
    x = 14,023,892,128,238,370/109,654,345.20
  6. Step 6: Final answer
    x = 127,891,804.95

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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.