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Finding the Fourth Proportional to 134,615.45, 185,766.54 and 74,184.54

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Solution

The fourth proportional to 134,615.45, 185,766.54 and 74,184.54 is: 102,373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,615.45 : 185,766.54 = 74,184.54 : x
  2. Step 2: Convert to fraction form
    134,615.45/185,766.54 = 74,184.54/x
  3. Step 3: Cross multiply
    134,615.45x = 185,766.54 × 74,184.54
  4. Step 4: Simplify right side
    134,615.45x = 13,781,005,317.29
  5. Step 5: Solve for x
    x = 13,781,005,317.29/134,615.45
  6. Step 6: Final answer
    x = 102,373.14

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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.