Home / 112,821,129.80-169,231,694.70-102,912,086.60

Finding the Fourth Proportional to 112,821,129.80, 169,231,694.70 and 102,912,086.60

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Solution

The fourth proportional to 112,821,129.80, 169,231,694.70 and 102,912,086.60 is: 154,368,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,821,129.80 : 169,231,694.70 = 102,912,086.60 : x
  2. Step 2: Convert to fraction form
    112,821,129.80/169,231,694.70 = 102,912,086.60/x
  3. Step 3: Cross multiply
    112,821,129.80x = 169,231,694.70 × 102,912,086.60
  4. Step 4: Simplify right side
    112,821,129.80x = 17,415,986,820,431,158
  5. Step 5: Solve for x
    x = 17,415,986,820,431,158/112,821,129.80
  6. Step 6: Final answer
    x = 154,368,129.90

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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.