Home / 143,439.89-214,962.99-90,755.06

Finding the Fourth Proportional to 143,439.89, 214,962.99 and 90,755.06

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Solution

The fourth proportional to 143,439.89, 214,962.99 and 90,755.06 is: 136,008.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,439.89 : 214,962.99 = 90,755.06 : x
  2. Step 2: Convert to fraction form
    143,439.89/214,962.99 = 90,755.06/x
  3. Step 3: Cross multiply
    143,439.89x = 214,962.99 × 90,755.06
  4. Step 4: Simplify right side
    143,439.89x = 19,508,977,980.41
  5. Step 5: Solve for x
    x = 19,508,977,980.41/143,439.89
  6. Step 6: Final answer
    x = 136,008.04

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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.