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Finding the Fourth Proportional to 102,671.80, 143,390.60 and 102,671.80

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Solution

The fourth proportional to 102,671.80, 143,390.60 and 102,671.80 is: 143,390.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,671.80 : 143,390.60 = 102,671.80 : x
  2. Step 2: Convert to fraction form
    102,671.80/143,390.60 = 102,671.80/x
  3. Step 3: Cross multiply
    102,671.80x = 143,390.60 × 102,671.80
  4. Step 4: Simplify right side
    102,671.80x = 14,722,171,005.08
  5. Step 5: Solve for x
    x = 14,722,171,005.08/102,671.80
  6. Step 6: Final answer
    x = 143,390.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.