Home / 128,387.44-192,541.92-45,262

Finding the Fourth Proportional to 128,387.44, 192,541.92 and 45,262

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Solution

The fourth proportional to 128,387.44, 192,541.92 and 45,262 is: 67,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,387.44 : 192,541.92 = 45,262 : x
  2. Step 2: Convert to fraction form
    128,387.44/192,541.92 = 45,262/x
  3. Step 3: Cross multiply
    128,387.44x = 192,541.92 × 45,262
  4. Step 4: Simplify right side
    128,387.44x = 8,714,832,383.04
  5. Step 5: Solve for x
    x = 8,714,832,383.04/128,387.44
  6. Step 6: Final answer
    x = 67,879.17

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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.