Home / 78,129,250.67-117,182,468.19-22,782,212.90

Finding the Fourth Proportional to 78,129,250.67, 117,182,468.19 and 22,782,212.90

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Solution

The fourth proportional to 78,129,250.67, 117,182,468.19 and 22,782,212.90 is: 34,169,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,129,250.67 : 117,182,468.19 = 22,782,212.90 : x
  2. Step 2: Convert to fraction form
    78,129,250.67/117,182,468.19 = 22,782,212.90/x
  3. Step 3: Cross multiply
    78,129,250.67x = 117,182,468.19 × 22,782,212.90
  4. Step 4: Simplify right side
    78,129,250.67x = 2,669,675,938,830,447
  5. Step 5: Solve for x
    x = 2,669,675,938,830,447/78,129,250.67
  6. Step 6: Final answer
    x = 34,169,992.88

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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.