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Finding the Fourth Proportional to 138,437.88, 207,676.86 and 43,636.02

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Solution

The fourth proportional to 138,437.88, 207,676.86 and 43,636.02 is: 65,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,437.88 : 207,676.86 = 43,636.02 : x
  2. Step 2: Convert to fraction form
    138,437.88/207,676.86 = 43,636.02/x
  3. Step 3: Cross multiply
    138,437.88x = 207,676.86 × 43,636.02
  4. Step 4: Simplify right side
    138,437.88x = 9,062,191,616.50
  5. Step 5: Solve for x
    x = 9,062,191,616.50/138,437.88
  6. Step 6: Final answer
    x = 65,460.35

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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.