Home / 138,912.98-208,381.79-39,074.00

Finding the Fourth Proportional to 138,912.98, 208,381.79 and 39,074.00

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Solution

The fourth proportional to 138,912.98, 208,381.79 and 39,074.00 is: 58,614.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,912.98 : 208,381.79 = 39,074.00 : x
  2. Step 2: Convert to fraction form
    138,912.98/208,381.79 = 39,074.00/x
  3. Step 3: Cross multiply
    138,912.98x = 208,381.79 × 39,074.00
  4. Step 4: Simplify right side
    138,912.98x = 8,142,308,825.18
  5. Step 5: Solve for x
    x = 8,142,308,825.18/138,912.98
  6. Step 6: Final answer
    x = 58,614.46

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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.