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Finding the Fourth Proportional to 136,387.56, 204,460.86 and 53,223.40

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Solution

The fourth proportional to 136,387.56, 204,460.86 and 53,223.40 is: 79,788.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,387.56 : 204,460.86 = 53,223.40 : x
  2. Step 2: Convert to fraction form
    136,387.56/204,460.86 = 53,223.40/x
  3. Step 3: Cross multiply
    136,387.56x = 204,460.86 × 53,223.40
  4. Step 4: Simplify right side
    136,387.56x = 10,882,102,136.12
  5. Step 5: Solve for x
    x = 10,882,102,136.12/136,387.56
  6. Step 6: Final answer
    x = 79,788.08

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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.