Home / 100,187,864,221.38-138,258,270,383.07-54,459,418,890.79

Finding the Fourth Proportional to 100,187,864,221.38, 138,258,270,383.07 and 54,459,418,890.79

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Solution

The fourth proportional to 100,187,864,221.38, 138,258,270,383.07 and 54,459,418,890.79 is: 75,153,464,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,187,864,221.38 : 138,258,270,383.07 = 54,459,418,890.79 : x
  2. Step 2: Convert to fraction form
    100,187,864,221.38/138,258,270,383.07 = 54,459,418,890.79/x
  3. Step 3: Cross multiply
    100,187,864,221.38x = 138,258,270,383.07 × 54,459,418,890.79
  4. Step 4: Simplify right side
    100,187,864,221.38x = 7,529,465,061,907,714,015,232
  5. Step 5: Solve for x
    x = 7,529,465,061,907,714,015,232/100,187,864,221.38
  6. Step 6: Final answer
    x = 75,153,464,148.81

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1.5x scale

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.