Home / 140,019,688.20-209,693,609.10-68,132,123.40

Finding the Fourth Proportional to 140,019,688.20, 209,693,609.10 and 68,132,123.40

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Solution

The fourth proportional to 140,019,688.20, 209,693,609.10 and 68,132,123.40 is: 102,034,728.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,019,688.20 : 209,693,609.10 = 68,132,123.40 : x
  2. Step 2: Convert to fraction form
    140,019,688.20/209,693,609.10 = 68,132,123.40/x
  3. Step 3: Cross multiply
    140,019,688.20x = 209,693,609.10 × 68,132,123.40
  4. Step 4: Simplify right side
    140,019,688.20x = 14,286,870,851,392,564
  5. Step 5: Solve for x
    x = 14,286,870,851,392,564/140,019,688.20
  6. Step 6: Final answer
    x = 102,034,728.37

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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.