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Finding the Fourth Proportional to 128,102.40, 192,228.48 and 92,528.64

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Solution

The fourth proportional to 128,102.40, 192,228.48 and 92,528.64 is: 138,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,102.40 : 192,228.48 = 92,528.64 : x
  2. Step 2: Convert to fraction form
    128,102.40/192,228.48 = 92,528.64/x
  3. Step 3: Cross multiply
    128,102.40x = 192,228.48 × 92,528.64
  4. Step 4: Simplify right side
    128,102.40x = 17,786,639,823.67
  5. Step 5: Solve for x
    x = 17,786,639,823.67/128,102.40
  6. Step 6: Final answer
    x = 138,847.05

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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.