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Finding the Fourth Proportional to 186,671.40, 280,007.10 and 102,690.60

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Solution

The fourth proportional to 186,671.40, 280,007.10 and 102,690.60 is: 154,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,671.40 : 280,007.10 = 102,690.60 : x
  2. Step 2: Convert to fraction form
    186,671.40/280,007.10 = 102,690.60/x
  3. Step 3: Cross multiply
    186,671.40x = 280,007.10 × 102,690.60
  4. Step 4: Simplify right side
    186,671.40x = 28,754,097,103.26
  5. Step 5: Solve for x
    x = 28,754,097,103.26/186,671.40
  6. Step 6: Final answer
    x = 154,035.90

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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.