Home / 136,250,485.92-187,997,602.32-78,292,536.48

Finding the Fourth Proportional to 136,250,485.92, 187,997,602.32 and 78,292,536.48

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Solution

The fourth proportional to 136,250,485.92, 187,997,602.32 and 78,292,536.48 is: 108,027,571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,250,485.92 : 187,997,602.32 = 78,292,536.48 : x
  2. Step 2: Convert to fraction form
    136,250,485.92/187,997,602.32 = 78,292,536.48/x
  3. Step 3: Cross multiply
    136,250,485.92x = 187,997,602.32 × 78,292,536.48
  4. Step 4: Simplify right side
    136,250,485.92x = 14,718,809,137,791,132
  5. Step 5: Solve for x
    x = 14,718,809,137,791,132/136,250,485.92
  6. Step 6: Final answer
    x = 108,027,571.71

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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.