Home / 136,405.24-204,640.08-42,911

Finding the Fourth Proportional to 136,405.24, 204,640.08 and 42,911

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Solution

The fourth proportional to 136,405.24, 204,640.08 and 42,911 is: 64,376.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,405.24 : 204,640.08 = 42,911 : x
  2. Step 2: Convert to fraction form
    136,405.24/204,640.08 = 42,911/x
  3. Step 3: Cross multiply
    136,405.24x = 204,640.08 × 42,911
  4. Step 4: Simplify right side
    136,405.24x = 8,781,310,472.88
  5. Step 5: Solve for x
    x = 8,781,310,472.88/136,405.24
  6. Step 6: Final answer
    x = 64,376.64

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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.