Home / 112,763,791.90-169,145,687.85-78,751,567.90

Finding the Fourth Proportional to 112,763,791.90, 169,145,687.85 and 78,751,567.90

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Solution

The fourth proportional to 112,763,791.90, 169,145,687.85 and 78,751,567.90 is: 118,127,351.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,763,791.90 : 169,145,687.85 = 78,751,567.90 : x
  2. Step 2: Convert to fraction form
    112,763,791.90/169,145,687.85 = 78,751,567.90/x
  3. Step 3: Cross multiply
    112,763,791.90x = 169,145,687.85 × 78,751,567.90
  4. Step 4: Simplify right side
    112,763,791.90x = 13,320,488,121,711,480
  5. Step 5: Solve for x
    x = 13,320,488,121,711,480/112,763,791.90
  6. Step 6: Final answer
    x = 118,127,351.85

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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.