Home / 140,217,358.50-193,496,389.92-78,338,161.80

Finding the Fourth Proportional to 140,217,358.50, 193,496,389.92 and 78,338,161.80

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Solution

The fourth proportional to 140,217,358.50, 193,496,389.92 and 78,338,161.80 is: 108,104,671.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,217,358.50 : 193,496,389.92 = 78,338,161.80 : x
  2. Step 2: Convert to fraction form
    140,217,358.50/193,496,389.92 = 78,338,161.80/x
  3. Step 3: Cross multiply
    140,217,358.50x = 193,496,389.92 × 78,338,161.80
  4. Step 4: Simplify right side
    140,217,358.50x = 15,158,151,501,268,848
  5. Step 5: Solve for x
    x = 15,158,151,501,268,848/140,217,358.50
  6. Step 6: Final answer
    x = 108,104,671.66

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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.