Home / 138,732.30-208,124.70-43,986.35

Finding the Fourth Proportional to 138,732.30, 208,124.70 and 43,986.35

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Solution

The fourth proportional to 138,732.30, 208,124.70 and 43,986.35 is: 65,987.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,732.30 : 208,124.70 = 43,986.35 : x
  2. Step 2: Convert to fraction form
    138,732.30/208,124.70 = 43,986.35/x
  3. Step 3: Cross multiply
    138,732.30x = 208,124.70 × 43,986.35
  4. Step 4: Simplify right side
    138,732.30x = 9,154,644,692.27
  5. Step 5: Solve for x
    x = 9,154,644,692.27/138,732.30
  6. Step 6: Final answer
    x = 65,987.84

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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.