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Finding the Fourth Proportional to 103,400.64, 154,794.78 and 63,830.52

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Solution

The fourth proportional to 103,400.64, 154,794.78 and 63,830.52 is: 95,556.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,400.64 : 154,794.78 = 63,830.52 : x
  2. Step 2: Convert to fraction form
    103,400.64/154,794.78 = 63,830.52/x
  3. Step 3: Cross multiply
    103,400.64x = 154,794.78 × 63,830.52
  4. Step 4: Simplify right side
    103,400.64x = 9,880,631,300.69
  5. Step 5: Solve for x
    x = 9,880,631,300.69/103,400.64
  6. Step 6: Final answer
    x = 95,556.77

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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.