Home / 136,250,487.92-187,997,605.08-78,292,538.48

Finding the Fourth Proportional to 136,250,487.92, 187,997,605.08 and 78,292,538.48

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Solution

The fourth proportional to 136,250,487.92, 187,997,605.08 and 78,292,538.48 is: 108,027,574.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,250,487.92 : 187,997,605.08 = 78,292,538.48 : x
  2. Step 2: Convert to fraction form
    136,250,487.92/187,997,605.08 = 78,292,538.48/x
  3. Step 3: Cross multiply
    136,250,487.92x = 187,997,605.08 × 78,292,538.48
  4. Step 4: Simplify right side
    136,250,487.92x = 14,718,809,729,873,746
  5. Step 5: Solve for x
    x = 14,718,809,729,873,746/136,250,487.92
  6. Step 6: Final answer
    x = 108,027,574.47

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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.