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Finding the Fourth Proportional to 193,374.64, 266,359.80 and 136,688.56

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Solution

The fourth proportional to 193,374.64, 266,359.80 and 136,688.56 is: 188,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,374.64 : 266,359.80 = 136,688.56 : x
  2. Step 2: Convert to fraction form
    193,374.64/266,359.80 = 136,688.56/x
  3. Step 3: Cross multiply
    193,374.64x = 266,359.80 × 136,688.56
  4. Step 4: Simplify right side
    193,374.64x = 36,408,337,503.89
  5. Step 5: Solve for x
    x = 36,408,337,503.89/193,374.64
  6. Step 6: Final answer
    x = 188,278.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.