Home / 212,605,842.20-318,908,763.30-115,608,018.20

Finding the Fourth Proportional to 212,605,842.20, 318,908,763.30 and 115,608,018.20

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Solution

The fourth proportional to 212,605,842.20, 318,908,763.30 and 115,608,018.20 is: 173,412,027.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,605,842.20 : 318,908,763.30 = 115,608,018.20 : x
  2. Step 2: Convert to fraction form
    212,605,842.20/318,908,763.30 = 115,608,018.20/x
  3. Step 3: Cross multiply
    212,605,842.20x = 318,908,763.30 × 115,608,018.20
  4. Step 4: Simplify right side
    212,605,842.20x = 36,868,410,111,725,896
  5. Step 5: Solve for x
    x = 36,868,410,111,725,896/212,605,842.20
  6. Step 6: Final answer
    x = 173,412,027.30

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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.