Home / 128,519,994.38-177,352,618.25-69,781,315.30

Finding the Fourth Proportional to 128,519,994.38, 177,352,618.25 and 69,781,315.30

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Solution

The fourth proportional to 128,519,994.38, 177,352,618.25 and 69,781,315.30 is: 96,295,514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,519,994.38 : 177,352,618.25 = 69,781,315.30 : x
  2. Step 2: Convert to fraction form
    128,519,994.38/177,352,618.25 = 69,781,315.30/x
  3. Step 3: Cross multiply
    128,519,994.38x = 177,352,618.25 × 69,781,315.30
  4. Step 4: Simplify right side
    128,519,994.38x = 12,375,898,973,114,856
  5. Step 5: Solve for x
    x = 12,375,898,973,114,856/128,519,994.38
  6. Step 6: Final answer
    x = 96,295,514.43

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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.