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Finding the Fourth Proportional to 134,842.56, 186,002.56 and 87,124.04

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Solution

The fourth proportional to 134,842.56, 186,002.56 and 87,124.04 is: 120,179.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,842.56 : 186,002.56 = 87,124.04 : x
  2. Step 2: Convert to fraction form
    134,842.56/186,002.56 = 87,124.04/x
  3. Step 3: Cross multiply
    134,842.56x = 186,002.56 × 87,124.04
  4. Step 4: Simplify right side
    134,842.56x = 16,205,294,477.54
  5. Step 5: Solve for x
    x = 16,205,294,477.54/134,842.56
  6. Step 6: Final answer
    x = 120,179.37

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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.