Home / 112,123,920.80-168,185,881.20-81,890,832.80

Finding the Fourth Proportional to 112,123,920.80, 168,185,881.20 and 81,890,832.80

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Solution

The fourth proportional to 112,123,920.80, 168,185,881.20 and 81,890,832.80 is: 122,836,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,123,920.80 : 168,185,881.20 = 81,890,832.80 : x
  2. Step 2: Convert to fraction form
    112,123,920.80/168,185,881.20 = 81,890,832.80/x
  3. Step 3: Cross multiply
    112,123,920.80x = 168,185,881.20 × 81,890,832.80
  4. Step 4: Simplify right side
    112,123,920.80x = 13,772,881,876,669,862
  5. Step 5: Solve for x
    x = 13,772,881,876,669,862/112,123,920.80
  6. Step 6: Final answer
    x = 122,836,249.20

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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.