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Finding the Fourth Proportional to 139,043.16, 208,575.72 and 54,797.58

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Solution

The fourth proportional to 139,043.16, 208,575.72 and 54,797.58 is: 82,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,043.16 : 208,575.72 = 54,797.58 : x
  2. Step 2: Convert to fraction form
    139,043.16/208,575.72 = 54,797.58/x
  3. Step 3: Cross multiply
    139,043.16x = 208,575.72 × 54,797.58
  4. Step 4: Simplify right side
    139,043.16x = 11,429,444,702.76
  5. Step 5: Solve for x
    x = 11,429,444,702.76/139,043.16
  6. Step 6: Final answer
    x = 82,200.70

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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.