Home / 138,879,217.40-208,352,003.70-67,016,535.80

Finding the Fourth Proportional to 138,879,217.40, 208,352,003.70 and 67,016,535.80

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Solution

The fourth proportional to 138,879,217.40, 208,352,003.70 and 67,016,535.80 is: 100,540,813.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,879,217.40 : 208,352,003.70 = 67,016,535.80 : x
  2. Step 2: Convert to fraction form
    138,879,217.40/208,352,003.70 = 67,016,535.80/x
  3. Step 3: Cross multiply
    138,879,217.40x = 208,352,003.70 × 67,016,535.80
  4. Step 4: Simplify right side
    138,879,217.40x = 13,963,029,514,962,782
  5. Step 5: Solve for x
    x = 13,963,029,514,962,782/138,879,217.40
  6. Step 6: Final answer
    x = 100,540,813.64

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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.