Home / 135,730.30-187,308.05-75,300.95

Finding the Fourth Proportional to 135,730.30, 187,308.05 and 75,300.95

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Solution

The fourth proportional to 135,730.30, 187,308.05 and 75,300.95 is: 103,915.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,730.30 : 187,308.05 = 75,300.95 : x
  2. Step 2: Convert to fraction form
    135,730.30/187,308.05 = 75,300.95/x
  3. Step 3: Cross multiply
    135,730.30x = 187,308.05 × 75,300.95
  4. Step 4: Simplify right side
    135,730.30x = 14,104,474,107.65
  5. Step 5: Solve for x
    x = 14,104,474,107.65/135,730.30
  6. Step 6: Final answer
    x = 103,915.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.