Home / 123,922,805.40-185,912,201.70-72,778,498.20

Finding the Fourth Proportional to 123,922,805.40, 185,912,201.70 and 72,778,498.20

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Solution

The fourth proportional to 123,922,805.40, 185,912,201.70 and 72,778,498.20 is: 109,184,187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,922,805.40 : 185,912,201.70 = 72,778,498.20 : x
  2. Step 2: Convert to fraction form
    123,922,805.40/185,912,201.70 = 72,778,498.20/x
  3. Step 3: Cross multiply
    123,922,805.40x = 185,912,201.70 × 72,778,498.20
  4. Step 4: Simplify right side
    123,922,805.40x = 13,530,410,836,781,486
  5. Step 5: Solve for x
    x = 13,530,410,836,781,486/123,922,805.40
  6. Step 6: Final answer
    x = 109,184,187.63

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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.