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Finding the Fourth Proportional to 138,859.94, 208,289.90 and 39,016.10

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Solution

The fourth proportional to 138,859.94, 208,289.90 and 39,016.10 is: 58,524.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,859.94 : 208,289.90 = 39,016.10 : x
  2. Step 2: Convert to fraction form
    138,859.94/208,289.90 = 39,016.10/x
  3. Step 3: Cross multiply
    138,859.94x = 208,289.90 × 39,016.10
  4. Step 4: Simplify right side
    138,859.94x = 8,126,658,623.48
  5. Step 5: Solve for x
    x = 8,126,658,623.48/138,859.94
  6. Step 6: Final answer
    x = 58,524.14

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1.5x scale

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.