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Finding the Fourth Proportional to 491,125.81, 736,615.81 and 136,102.81

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Solution

The fourth proportional to 491,125.81, 736,615.81 and 136,102.81 is: 204,134.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,125.81 : 736,615.81 = 136,102.81 : x
  2. Step 2: Convert to fraction form
    491,125.81/736,615.81 = 136,102.81/x
  3. Step 3: Cross multiply
    491,125.81x = 736,615.81 × 136,102.81
  4. Step 4: Simplify right side
    491,125.81x = 100,255,481,631.43
  5. Step 5: Solve for x
    x = 100,255,481,631.43/491,125.81
  6. Step 6: Final answer
    x = 204,134.01

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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.