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Finding the Fourth Proportional to 135,015.92, 186,323.28 and 74,588

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Solution

The fourth proportional to 135,015.92, 186,323.28 and 74,588 is: 102,932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,015.92 : 186,323.28 = 74,588 : x
  2. Step 2: Convert to fraction form
    135,015.92/186,323.28 = 74,588/x
  3. Step 3: Cross multiply
    135,015.92x = 186,323.28 × 74,588
  4. Step 4: Simplify right side
    135,015.92x = 13,897,480,808.64
  5. Step 5: Solve for x
    x = 13,897,480,808.64/135,015.92
  6. Step 6: Final answer
    x = 102,932.16

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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.