Home / 138,726,530.20-208,026,809.70-52,436,258.20

Finding the Fourth Proportional to 138,726,530.20, 208,026,809.70 and 52,436,258.20

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Solution

The fourth proportional to 138,726,530.20, 208,026,809.70 and 52,436,258.20 is: 78,630,579.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,726,530.20 : 208,026,809.70 = 52,436,258.20 : x
  2. Step 2: Convert to fraction form
    138,726,530.20/208,026,809.70 = 52,436,258.20/x
  3. Step 3: Cross multiply
    138,726,530.20x = 208,026,809.70 × 52,436,258.20
  4. Step 4: Simplify right side
    138,726,530.20x = 10,908,147,505,951,464
  5. Step 5: Solve for x
    x = 10,908,147,505,951,464/138,726,530.20
  6. Step 6: Final answer
    x = 78,630,579.82

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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.