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Finding the Fourth Proportional to 128,504.60, 192,646.02 and 61,853.06

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Solution

The fourth proportional to 128,504.60, 192,646.02 and 61,853.06 is: 92,726.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,504.60 : 192,646.02 = 61,853.06 : x
  2. Step 2: Convert to fraction form
    128,504.60/192,646.02 = 61,853.06/x
  3. Step 3: Cross multiply
    128,504.60x = 192,646.02 × 61,853.06
  4. Step 4: Simplify right side
    128,504.60x = 11,915,745,833.82
  5. Step 5: Solve for x
    x = 11,915,745,833.82/128,504.60
  6. Step 6: Final answer
    x = 92,726.22

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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.