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Finding the Fourth Proportional to 140,775.66, 210,672.61 and 115,179.35

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Solution

The fourth proportional to 140,775.66, 210,672.61 and 115,179.35 is: 172,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,775.66 : 210,672.61 = 115,179.35 : x
  2. Step 2: Convert to fraction form
    140,775.66/210,672.61 = 115,179.35/x
  3. Step 3: Cross multiply
    140,775.66x = 210,672.61 × 115,179.35
  4. Step 4: Simplify right side
    140,775.66x = 24,265,134,521.34
  5. Step 5: Solve for x
    x = 24,265,134,521.34/140,775.66
  6. Step 6: Final answer
    x = 172,367.40

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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.