Home / 208,026,840.30-312,040,260.45-105,990,168.30

Finding the Fourth Proportional to 208,026,840.30, 312,040,260.45 and 105,990,168.30

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Solution

The fourth proportional to 208,026,840.30, 312,040,260.45 and 105,990,168.30 is: 158,985,252.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,026,840.30 : 312,040,260.45 = 105,990,168.30 : x
  2. Step 2: Convert to fraction form
    208,026,840.30/312,040,260.45 = 105,990,168.30/x
  3. Step 3: Cross multiply
    208,026,840.30x = 312,040,260.45 × 105,990,168.30
  4. Step 4: Simplify right side
    208,026,840.30x = 33,073,199,721,471,332
  5. Step 5: Solve for x
    x = 33,073,199,721,471,332/208,026,840.30
  6. Step 6: Final answer
    x = 158,985,252.45

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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.