Home / 139,929,101.80-209,982,126.30-82,421,261.80

Finding the Fourth Proportional to 139,929,101.80, 209,982,126.30 and 82,421,261.80

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Solution

The fourth proportional to 139,929,101.80, 209,982,126.30 and 82,421,261.80 is: 123,684,005.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,929,101.80 : 209,982,126.30 = 82,421,261.80 : x
  2. Step 2: Convert to fraction form
    139,929,101.80/209,982,126.30 = 82,421,261.80/x
  3. Step 3: Cross multiply
    139,929,101.80x = 209,982,126.30 × 82,421,261.80
  4. Step 4: Simplify right side
    139,929,101.80x = 17,306,991,805,092,966
  5. Step 5: Solve for x
    x = 17,306,991,805,092,966/139,929,101.80
  6. Step 6: Final answer
    x = 123,684,005.56

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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.