Home / 112,002,805.80-168,004,208.70-81,391,804.20

Finding the Fourth Proportional to 112,002,805.80, 168,004,208.70 and 81,391,804.20

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Solution

The fourth proportional to 112,002,805.80, 168,004,208.70 and 81,391,804.20 is: 122,087,706.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,002,805.80 : 168,004,208.70 = 81,391,804.20 : x
  2. Step 2: Convert to fraction form
    112,002,805.80/168,004,208.70 = 81,391,804.20/x
  3. Step 3: Cross multiply
    112,002,805.80x = 168,004,208.70 × 81,391,804.20
  4. Step 4: Simplify right side
    112,002,805.80x = 13,674,165,659,286,336
  5. Step 5: Solve for x
    x = 13,674,165,659,286,336/112,002,805.80
  6. Step 6: Final answer
    x = 122,087,706.30

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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.