Home / 104,223.15-155,961-90,231.30

Finding the Fourth Proportional to 104,223.15, 155,961 and 90,231.30

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Solution

The fourth proportional to 104,223.15, 155,961 and 90,231.30 is: 135,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,223.15 : 155,961 = 90,231.30 : x
  2. Step 2: Convert to fraction form
    104,223.15/155,961 = 90,231.30/x
  3. Step 3: Cross multiply
    104,223.15x = 155,961 × 90,231.30
  4. Step 4: Simplify right side
    104,223.15x = 14,072,563,779.30
  5. Step 5: Solve for x
    x = 14,072,563,779.30/104,223.15
  6. Step 6: Final answer
    x = 135,023.40

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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.