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Finding the Fourth Proportional to 202,697.42, 279,720.59 and 112,055.72

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Solution

The fourth proportional to 202,697.42, 279,720.59 and 112,055.72 is: 154,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,697.42 : 279,720.59 = 112,055.72 : x
  2. Step 2: Convert to fraction form
    202,697.42/279,720.59 = 112,055.72/x
  3. Step 3: Cross multiply
    202,697.42x = 279,720.59 × 112,055.72
  4. Step 4: Simplify right side
    202,697.42x = 31,344,290,152.39
  5. Step 5: Solve for x
    x = 31,344,290,152.39/202,697.42
  6. Step 6: Final answer
    x = 154,635.87

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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.