Home / 137,109,972.77-189,211,764.53-78,373,910.33

Finding the Fourth Proportional to 137,109,972.77, 189,211,764.53 and 78,373,910.33

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Solution

The fourth proportional to 137,109,972.77, 189,211,764.53 and 78,373,910.33 is: 108,155,997.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,109,972.77 : 189,211,764.53 = 78,373,910.33 : x
  2. Step 2: Convert to fraction form
    137,109,972.77/189,211,764.53 = 78,373,910.33/x
  3. Step 3: Cross multiply
    137,109,972.77x = 189,211,764.53 × 78,373,910.33
  4. Step 4: Simplify right side
    137,109,972.77x = 14,829,265,866,173,470
  5. Step 5: Solve for x
    x = 14,829,265,866,173,470/137,109,972.77
  6. Step 6: Final answer
    x = 108,155,997.46

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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.