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Finding the Fourth Proportional to 128,606.40, 192,932.28 and 44,359.92

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Solution

The fourth proportional to 128,606.40, 192,932.28 and 44,359.92 is: 66,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,606.40 : 192,932.28 = 44,359.92 : x
  2. Step 2: Convert to fraction form
    128,606.40/192,932.28 = 44,359.92/x
  3. Step 3: Cross multiply
    128,606.40x = 192,932.28 × 44,359.92
  4. Step 4: Simplify right side
    128,606.40x = 8,558,460,506.22
  5. Step 5: Solve for x
    x = 8,558,460,506.22/128,606.40
  6. Step 6: Final answer
    x = 66,547.70

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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.