Home / 120,500.36-180,752.94-84,815.72

Finding the Fourth Proportional to 120,500.36, 180,752.94 and 84,815.72

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Solution

The fourth proportional to 120,500.36, 180,752.94 and 84,815.72 is: 127,225.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,500.36 : 180,752.94 = 84,815.72 : x
  2. Step 2: Convert to fraction form
    120,500.36/180,752.94 = 84,815.72/x
  3. Step 3: Cross multiply
    120,500.36x = 180,752.94 × 84,815.72
  4. Step 4: Simplify right side
    120,500.36x = 15,330,690,748.22
  5. Step 5: Solve for x
    x = 15,330,690,748.22/120,500.36
  6. Step 6: Final answer
    x = 127,225.27

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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.