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Finding the Fourth Proportional to 137,393.61, 189,630.81 and 93,902.28

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Solution

The fourth proportional to 137,393.61, 189,630.81 and 93,902.28 is: 129,604.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,393.61 : 189,630.81 = 93,902.28 : x
  2. Step 2: Convert to fraction form
    137,393.61/189,630.81 = 93,902.28/x
  3. Step 3: Cross multiply
    137,393.61x = 189,630.81 × 93,902.28
  4. Step 4: Simplify right side
    137,393.61x = 17,806,765,417.25
  5. Step 5: Solve for x
    x = 17,806,765,417.25/137,393.61
  6. Step 6: Final answer
    x = 129,604.03

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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.