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Finding the Fourth Proportional to 162,640.56, 243,911.04 and 57,434.88

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Solution

The fourth proportional to 162,640.56, 243,911.04 and 57,434.88 is: 86,134.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,640.56 : 243,911.04 = 57,434.88 : x
  2. Step 2: Convert to fraction form
    162,640.56/243,911.04 = 57,434.88/x
  3. Step 3: Cross multiply
    162,640.56x = 243,911.04 × 57,434.88
  4. Step 4: Simplify right side
    162,640.56x = 14,009,001,313.08
  5. Step 5: Solve for x
    x = 14,009,001,313.08/162,640.56
  6. Step 6: Final answer
    x = 86,134.73

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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.