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Finding the Fourth Proportional to 103,265.64, 154,902.25 and 28,391.65

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Solution

The fourth proportional to 103,265.64, 154,902.25 and 28,391.65 is: 42,588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,265.64 : 154,902.25 = 28,391.65 : x
  2. Step 2: Convert to fraction form
    103,265.64/154,902.25 = 28,391.65/x
  3. Step 3: Cross multiply
    103,265.64x = 154,902.25 × 28,391.65
  4. Step 4: Simplify right side
    103,265.64x = 4,397,930,466.21
  5. Step 5: Solve for x
    x = 4,397,930,466.21/103,265.64
  6. Step 6: Final answer
    x = 42,588.52

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1.5x scale

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.