Home / 81,657,014.10-122,485,521.15-81,090,143.70

Finding the Fourth Proportional to 81,657,014.10, 122,485,521.15 and 81,090,143.70

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Solution

The fourth proportional to 81,657,014.10, 122,485,521.15 and 81,090,143.70 is: 121,635,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,014.10 : 122,485,521.15 = 81,090,143.70 : x
  2. Step 2: Convert to fraction form
    81,657,014.10/122,485,521.15 = 81,090,143.70/x
  3. Step 3: Cross multiply
    81,657,014.10x = 122,485,521.15 × 81,090,143.70
  4. Step 4: Simplify right side
    81,657,014.10x = 9,932,368,511,222,890
  5. Step 5: Solve for x
    x = 9,932,368,511,222,890/81,657,014.10
  6. Step 6: Final answer
    x = 121,635,215.55

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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.