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Finding the Fourth Proportional to 134,638.76, 185,800.47 and 74,209.52

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Solution

The fourth proportional to 134,638.76, 185,800.47 and 74,209.52 is: 102,408.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,638.76 : 185,800.47 = 74,209.52 : x
  2. Step 2: Convert to fraction form
    134,638.76/185,800.47 = 74,209.52/x
  3. Step 3: Cross multiply
    134,638.76x = 185,800.47 × 74,209.52
  4. Step 4: Simplify right side
    134,638.76x = 13,788,162,765.47
  5. Step 5: Solve for x
    x = 13,788,162,765.47/134,638.76
  6. Step 6: Final answer
    x = 102,408.57

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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.