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Finding the Fourth Proportional to 92,145.09, 138,217.55 and 28,964.91

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Solution

The fourth proportional to 92,145.09, 138,217.55 and 28,964.91 is: 43,447.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,145.09 : 138,217.55 = 28,964.91 : x
  2. Step 2: Convert to fraction form
    92,145.09/138,217.55 = 28,964.91/x
  3. Step 3: Cross multiply
    92,145.09x = 138,217.55 × 28,964.91
  4. Step 4: Simplify right side
    92,145.09x = 4,003,458,751.35
  5. Step 5: Solve for x
    x = 4,003,458,751.35/92,145.09
  6. Step 6: Final answer
    x = 43,447.34

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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.