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Finding the Fourth Proportional to 137,338.40, 206,007.60 and 58,455.20

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Solution

The fourth proportional to 137,338.40, 206,007.60 and 58,455.20 is: 87,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,338.40 : 206,007.60 = 58,455.20 : x
  2. Step 2: Convert to fraction form
    137,338.40/206,007.60 = 58,455.20/x
  3. Step 3: Cross multiply
    137,338.40x = 206,007.60 × 58,455.20
  4. Step 4: Simplify right side
    137,338.40x = 12,042,215,459.52
  5. Step 5: Solve for x
    x = 12,042,215,459.52/137,338.40
  6. Step 6: Final answer
    x = 87,682.80

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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.