Home / 154,273.10-212,834.18-100,538.50

Finding the Fourth Proportional to 154,273.10, 212,834.18 and 100,538.50

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Solution

The fourth proportional to 154,273.10, 212,834.18 and 100,538.50 is: 138,702.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,273.10 : 212,834.18 = 100,538.50 : x
  2. Step 2: Convert to fraction form
    154,273.10/212,834.18 = 100,538.50/x
  3. Step 3: Cross multiply
    154,273.10x = 212,834.18 × 100,538.50
  4. Step 4: Simplify right side
    154,273.10x = 21,398,029,205.93
  5. Step 5: Solve for x
    x = 21,398,029,205.93/154,273.10
  6. Step 6: Final answer
    x = 138,702.27

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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.