Home / 83,018,539.20-124,191,885.60-72,940,843.20

Finding the Fourth Proportional to 83,018,539.20, 124,191,885.60 and 72,940,843.20

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Solution

The fourth proportional to 83,018,539.20, 124,191,885.60 and 72,940,843.20 is: 109,116,119.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,018,539.20 : 124,191,885.60 = 72,940,843.20 : x
  2. Step 2: Convert to fraction form
    83,018,539.20/124,191,885.60 = 72,940,843.20/x
  3. Step 3: Cross multiply
    83,018,539.20x = 124,191,885.60 × 72,940,843.20
  4. Step 4: Simplify right side
    83,018,539.20x = 9,058,660,854,261,938
  5. Step 5: Solve for x
    x = 9,058,660,854,261,938/83,018,539.20
  6. Step 6: Final answer
    x = 109,116,119.62

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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.