Home / 137,376,068.80-206,064,103.20-128,873,012.80

Finding the Fourth Proportional to 137,376,068.80, 206,064,103.20 and 128,873,012.80

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Solution

The fourth proportional to 137,376,068.80, 206,064,103.20 and 128,873,012.80 is: 193,309,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,376,068.80 : 206,064,103.20 = 128,873,012.80 : x
  2. Step 2: Convert to fraction form
    137,376,068.80/206,064,103.20 = 128,873,012.80/x
  3. Step 3: Cross multiply
    137,376,068.80x = 206,064,103.20 × 128,873,012.80
  4. Step 4: Simplify right side
    137,376,068.80x = 26,556,101,809,314,120
  5. Step 5: Solve for x
    x = 26,556,101,809,314,120/137,376,068.80
  6. Step 6: Final answer
    x = 193,309,519.20

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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.