Home / 140,018.10-193,168.51-81,042.76

Finding the Fourth Proportional to 140,018.10, 193,168.51 and 81,042.76

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Solution

The fourth proportional to 140,018.10, 193,168.51 and 81,042.76 is: 111,806.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,018.10 : 193,168.51 = 81,042.76 : x
  2. Step 2: Convert to fraction form
    140,018.10/193,168.51 = 81,042.76/x
  3. Step 3: Cross multiply
    140,018.10x = 193,168.51 × 81,042.76
  4. Step 4: Simplify right side
    140,018.10x = 15,654,909,234.34
  5. Step 5: Solve for x
    x = 15,654,909,234.34/140,018.10
  6. Step 6: Final answer
    x = 111,806.33

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1.5x scale

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.