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Finding the Fourth Proportional to 138,771.80, 208,008.42 and 59,923.16

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Solution

The fourth proportional to 138,771.80, 208,008.42 and 59,923.16 is: 89,820.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,771.80 : 208,008.42 = 59,923.16 : x
  2. Step 2: Convert to fraction form
    138,771.80/208,008.42 = 59,923.16/x
  3. Step 3: Cross multiply
    138,771.80x = 208,008.42 × 59,923.16
  4. Step 4: Simplify right side
    138,771.80x = 12,464,521,833.01
  5. Step 5: Solve for x
    x = 12,464,521,833.01/138,771.80
  6. Step 6: Final answer
    x = 89,820.28

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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.