Home / 402,122.90-603,165.15-135,857.30

Finding the Fourth Proportional to 402,122.90, 603,165.15 and 135,857.30

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Solution

The fourth proportional to 402,122.90, 603,165.15 and 135,857.30 is: 203,779.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,122.90 : 603,165.15 = 135,857.30 : x
  2. Step 2: Convert to fraction form
    402,122.90/603,165.15 = 135,857.30/x
  3. Step 3: Cross multiply
    402,122.90x = 603,165.15 × 135,857.30
  4. Step 4: Simplify right side
    402,122.90x = 81,944,388,733.10
  5. Step 5: Solve for x
    x = 81,944,388,733.10/402,122.90
  6. Step 6: Final answer
    x = 203,779.46

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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.