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Finding the Fourth Proportional to 157,794.86, 217,758.40 and 89,808.50

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Solution

The fourth proportional to 157,794.86, 217,758.40 and 89,808.50 is: 123,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,794.86 : 217,758.40 = 89,808.50 : x
  2. Step 2: Convert to fraction form
    157,794.86/217,758.40 = 89,808.50/x
  3. Step 3: Cross multiply
    157,794.86x = 217,758.40 × 89,808.50
  4. Step 4: Simplify right side
    157,794.86x = 19,556,555,266.40
  5. Step 5: Solve for x
    x = 19,556,555,266.40/157,794.86
  6. Step 6: Final answer
    x = 123,936.58

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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.