Home / 128,541.48-192,476.88-103,444.44

Finding the Fourth Proportional to 128,541.48, 192,476.88 and 103,444.44

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Solution

The fourth proportional to 128,541.48, 192,476.88 and 103,444.44 is: 154,896.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,541.48 : 192,476.88 = 103,444.44 : x
  2. Step 2: Convert to fraction form
    128,541.48/192,476.88 = 103,444.44/x
  3. Step 3: Cross multiply
    128,541.48x = 192,476.88 × 103,444.44
  4. Step 4: Simplify right side
    128,541.48x = 19,910,663,064.55
  5. Step 5: Solve for x
    x = 19,910,663,064.55/128,541.48
  6. Step 6: Final answer
    x = 154,896.79

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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.