Home / 140,350.18-193,682.78-76,688.50

Finding the Fourth Proportional to 140,350.18, 193,682.78 and 76,688.50

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Solution

The fourth proportional to 140,350.18, 193,682.78 and 76,688.50 is: 105,829.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,350.18 : 193,682.78 = 76,688.50 : x
  2. Step 2: Convert to fraction form
    140,350.18/193,682.78 = 76,688.50/x
  3. Step 3: Cross multiply
    140,350.18x = 193,682.78 × 76,688.50
  4. Step 4: Simplify right side
    140,350.18x = 14,853,241,874.03
  5. Step 5: Solve for x
    x = 14,853,241,874.03/140,350.18
  6. Step 6: Final answer
    x = 105,829.87

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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.