Home / 140,579.87-210,869.63-45,809.90

Finding the Fourth Proportional to 140,579.87, 210,869.63 and 45,809.90

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Solution

The fourth proportional to 140,579.87, 210,869.63 and 45,809.90 is: 68,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,579.87 : 210,869.63 = 45,809.90 : x
  2. Step 2: Convert to fraction form
    140,579.87/210,869.63 = 45,809.90/x
  3. Step 3: Cross multiply
    140,579.87x = 210,869.63 × 45,809.90
  4. Step 4: Simplify right side
    140,579.87x = 9,659,917,305.04
  5. Step 5: Solve for x
    x = 9,659,917,305.04/140,579.87
  6. Step 6: Final answer
    x = 68,714.80

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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.