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Finding the Fourth Proportional to 136,938.08, 205,484.48 and 73,756.86

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Solution

The fourth proportional to 136,938.08, 205,484.48 and 73,756.86 is: 110,676.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,938.08 : 205,484.48 = 73,756.86 : x
  2. Step 2: Convert to fraction form
    136,938.08/205,484.48 = 73,756.86/x
  3. Step 3: Cross multiply
    136,938.08x = 205,484.48 × 73,756.86
  4. Step 4: Simplify right side
    136,938.08x = 15,155,889,654.75
  5. Step 5: Solve for x
    x = 15,155,889,654.75/136,938.08
  6. Step 6: Final answer
    x = 110,676.96

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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.