Home / 190,709.13-285,714.84-89,321.03

Finding the Fourth Proportional to 190,709.13, 285,714.84 and 89,321.03

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Solution

The fourth proportional to 190,709.13, 285,714.84 and 89,321.03 is: 133,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,709.13 : 285,714.84 = 89,321.03 : x
  2. Step 2: Convert to fraction form
    190,709.13/285,714.84 = 89,321.03/x
  3. Step 3: Cross multiply
    190,709.13x = 285,714.84 × 89,321.03
  4. Step 4: Simplify right side
    190,709.13x = 25,520,343,772.90
  5. Step 5: Solve for x
    x = 25,520,343,772.90/190,709.13
  6. Step 6: Final answer
    x = 133,818.15

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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.