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Finding the Fourth Proportional to 124,435.60, 186,653.40 and 82,445.20

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Solution

The fourth proportional to 124,435.60, 186,653.40 and 82,445.20 is: 123,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,435.60 : 186,653.40 = 82,445.20 : x
  2. Step 2: Convert to fraction form
    124,435.60/186,653.40 = 82,445.20/x
  3. Step 3: Cross multiply
    124,435.60x = 186,653.40 × 82,445.20
  4. Step 4: Simplify right side
    124,435.60x = 15,388,676,893.68
  5. Step 5: Solve for x
    x = 15,388,676,893.68/124,435.60
  6. Step 6: Final answer
    x = 123,667.80

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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.