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Finding the Fourth Proportional to 140,258.71, 193,559.52 and 85,819.96

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Solution

The fourth proportional to 140,258.71, 193,559.52 and 85,819.96 is: 118,433.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,258.71 : 193,559.52 = 85,819.96 : x
  2. Step 2: Convert to fraction form
    140,258.71/193,559.52 = 85,819.96/x
  3. Step 3: Cross multiply
    140,258.71x = 193,559.52 × 85,819.96
  4. Step 4: Simplify right side
    140,258.71x = 16,611,270,264.02
  5. Step 5: Solve for x
    x = 16,611,270,264.02/140,258.71
  6. Step 6: Final answer
    x = 118,433.07

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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.