Home / 112,123,914.30-168,185,871.45-81,890,826.30

Finding the Fourth Proportional to 112,123,914.30, 168,185,871.45 and 81,890,826.30

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Solution

The fourth proportional to 112,123,914.30, 168,185,871.45 and 81,890,826.30 is: 122,836,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,123,914.30 : 168,185,871.45 = 81,890,826.30 : x
  2. Step 2: Convert to fraction form
    112,123,914.30/168,185,871.45 = 81,890,826.30/x
  3. Step 3: Cross multiply
    112,123,914.30x = 168,185,871.45 × 81,890,826.30
  4. Step 4: Simplify right side
    112,123,914.30x = 13,772,879,985,026,078
  5. Step 5: Solve for x
    x = 13,772,879,985,026,078/112,123,914.30
  6. Step 6: Final answer
    x = 122,836,239.45

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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.