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Finding the Fourth Proportional to 138,666.76, 208,000.76 and 43,897.41

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Solution

The fourth proportional to 138,666.76, 208,000.76 and 43,897.41 is: 65,846.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,666.76 : 208,000.76 = 43,897.41 : x
  2. Step 2: Convert to fraction form
    138,666.76/208,000.76 = 43,897.41/x
  3. Step 3: Cross multiply
    138,666.76x = 208,000.76 × 43,897.41
  4. Step 4: Simplify right side
    138,666.76x = 9,130,694,642.03
  5. Step 5: Solve for x
    x = 9,130,694,642.03/138,666.76
  6. Step 6: Final answer
    x = 65,846.31

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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.