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Finding the Fourth Proportional to 185,704.92, 256,270.28 and 105,130.36

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Solution

The fourth proportional to 185,704.92, 256,270.28 and 105,130.36 is: 145,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,704.92 : 256,270.28 = 105,130.36 : x
  2. Step 2: Convert to fraction form
    185,704.92/256,270.28 = 105,130.36/x
  3. Step 3: Cross multiply
    185,704.92x = 256,270.28 × 105,130.36
  4. Step 4: Simplify right side
    185,704.92x = 26,941,786,793.70
  5. Step 5: Solve for x
    x = 26,941,786,793.70/185,704.92
  6. Step 6: Final answer
    x = 145,078.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.