Home / 81,187,189.98-111,929,938.21-64,497,306.57

Finding the Fourth Proportional to 81,187,189.98, 111,929,938.21 and 64,497,306.57

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Solution

The fourth proportional to 81,187,189.98, 111,929,938.21 and 64,497,306.57 is: 88,920,179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187,189.98 : 111,929,938.21 = 64,497,306.57 : x
  2. Step 2: Convert to fraction form
    81,187,189.98/111,929,938.21 = 64,497,306.57/x
  3. Step 3: Cross multiply
    81,187,189.98x = 111,929,938.21 × 64,497,306.57
  4. Step 4: Simplify right side
    81,187,189.98x = 7,219,179,539,091,527
  5. Step 5: Solve for x
    x = 7,219,179,539,091,527/81,187,189.98
  6. Step 6: Final answer
    x = 88,920,179.91

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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.