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Finding the Fourth Proportional to 202,740.32, 279,770.32 and 112,090.96

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Solution

The fourth proportional to 202,740.32, 279,770.32 and 112,090.96 is: 154,679.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,740.32 : 279,770.32 = 112,090.96 : x
  2. Step 2: Convert to fraction form
    202,740.32/279,770.32 = 112,090.96/x
  3. Step 3: Cross multiply
    202,740.32x = 279,770.32 × 112,090.96
  4. Step 4: Simplify right side
    202,740.32x = 31,359,723,748.31
  5. Step 5: Solve for x
    x = 31,359,723,748.31/202,740.32
  6. Step 6: Final answer
    x = 154,679.27

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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.