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Finding the Fourth Proportional to 113,045.76, 169,257.60 and 85,259.52

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Solution

The fourth proportional to 113,045.76, 169,257.60 and 85,259.52 is: 127,654.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,045.76 : 169,257.60 = 85,259.52 : x
  2. Step 2: Convert to fraction form
    113,045.76/169,257.60 = 85,259.52/x
  3. Step 3: Cross multiply
    113,045.76x = 169,257.60 × 85,259.52
  4. Step 4: Simplify right side
    113,045.76x = 14,430,821,732.35
  5. Step 5: Solve for x
    x = 14,430,821,732.35/113,045.76
  6. Step 6: Final answer
    x = 127,654.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.