Home / 154,020,728.49-212,548,789.44-83,456,287.76

Finding the Fourth Proportional to 154,020,728.49, 212,548,789.44 and 83,456,287.76

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Solution

The fourth proportional to 154,020,728.49, 212,548,789.44 and 83,456,287.76 is: 115,169,776.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,020,728.49 : 212,548,789.44 = 83,456,287.76 : x
  2. Step 2: Convert to fraction form
    154,020,728.49/212,548,789.44 = 83,456,287.76/x
  3. Step 3: Cross multiply
    154,020,728.49x = 212,548,789.44 × 83,456,287.76
  4. Step 4: Simplify right side
    154,020,728.49x = 17,738,532,933,481,544
  5. Step 5: Solve for x
    x = 17,738,532,933,481,544/154,020,728.49
  6. Step 6: Final answer
    x = 115,169,776.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.