Home / 91,117,699.36-125,801,110.24-81,311,278.88

Finding the Fourth Proportional to 91,117,699.36, 125,801,110.24 and 81,311,278.88

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Solution

The fourth proportional to 91,117,699.36, 125,801,110.24 and 81,311,278.88 is: 112,261,934.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,117,699.36 : 125,801,110.24 = 81,311,278.88 : x
  2. Step 2: Convert to fraction form
    91,117,699.36/125,801,110.24 = 81,311,278.88/x
  3. Step 3: Cross multiply
    91,117,699.36x = 125,801,110.24 × 81,311,278.88
  4. Step 4: Simplify right side
    91,117,699.36x = 10,229,049,158,138,262
  5. Step 5: Solve for x
    x = 10,229,049,158,138,262/91,117,699.36
  6. Step 6: Final answer
    x = 112,261,934.07

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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.