Home / 140,019,777.20-209,693,742.60-68,132,212.40

Finding the Fourth Proportional to 140,019,777.20, 209,693,742.60 and 68,132,212.40

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Solution

The fourth proportional to 140,019,777.20, 209,693,742.60 and 68,132,212.40 is: 102,034,861.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,019,777.20 : 209,693,742.60 = 68,132,212.40 : x
  2. Step 2: Convert to fraction form
    140,019,777.20/209,693,742.60 = 68,132,212.40/x
  3. Step 3: Cross multiply
    140,019,777.20x = 209,693,742.60 × 68,132,212.40
  4. Step 4: Simplify right side
    140,019,777.20x = 14,286,898,609,774,130
  5. Step 5: Solve for x
    x = 14,286,898,609,774,130/140,019,777.20
  6. Step 6: Final answer
    x = 102,034,861.76

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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.