Home / 402,091.40-603,137.10-121,572.20

Finding the Fourth Proportional to 402,091.40, 603,137.10 and 121,572.20

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Solution

The fourth proportional to 402,091.40, 603,137.10 and 121,572.20 is: 182,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,091.40 : 603,137.10 = 121,572.20 : x
  2. Step 2: Convert to fraction form
    402,091.40/603,137.10 = 121,572.20/x
  3. Step 3: Cross multiply
    402,091.40x = 603,137.10 × 121,572.20
  4. Step 4: Simplify right side
    402,091.40x = 73,324,704,148.62
  5. Step 5: Solve for x
    x = 73,324,704,148.62/402,091.40
  6. Step 6: Final answer
    x = 182,358.30

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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.