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Finding the Fourth Proportional to 128,005.82, 192,031.26 and 43,746.18

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Solution

The fourth proportional to 128,005.82, 192,031.26 and 43,746.18 is: 65,626.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,005.82 : 192,031.26 = 43,746.18 : x
  2. Step 2: Convert to fraction form
    128,005.82/192,031.26 = 43,746.18/x
  3. Step 3: Cross multiply
    128,005.82x = 192,031.26 × 43,746.18
  4. Step 4: Simplify right side
    128,005.82x = 8,400,633,181.42
  5. Step 5: Solve for x
    x = 8,400,633,181.42/128,005.82
  6. Step 6: Final answer
    x = 65,626.96

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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.