Home / 140,152.96-193,408.56-76,489.12

Finding the Fourth Proportional to 140,152.96, 193,408.56 and 76,489.12

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Solution

The fourth proportional to 140,152.96, 193,408.56 and 76,489.12 is: 105,553.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,152.96 : 193,408.56 = 76,489.12 : x
  2. Step 2: Convert to fraction form
    140,152.96/193,408.56 = 76,489.12/x
  3. Step 3: Cross multiply
    140,152.96x = 193,408.56 × 76,489.12
  4. Step 4: Simplify right side
    140,152.96x = 14,793,650,554.87
  5. Step 5: Solve for x
    x = 14,793,650,554.87/140,152.96
  6. Step 6: Final answer
    x = 105,553.61

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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.