Home / 154,128.80-231,193.20-69,929.30

Finding the Fourth Proportional to 154,128.80, 231,193.20 and 69,929.30

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Solution

The fourth proportional to 154,128.80, 231,193.20 and 69,929.30 is: 104,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,128.80 : 231,193.20 = 69,929.30 : x
  2. Step 2: Convert to fraction form
    154,128.80/231,193.20 = 69,929.30/x
  3. Step 3: Cross multiply
    154,128.80x = 231,193.20 × 69,929.30
  4. Step 4: Simplify right side
    154,128.80x = 16,167,178,640.76
  5. Step 5: Solve for x
    x = 16,167,178,640.76/154,128.80
  6. Step 6: Final answer
    x = 104,893.95

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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.