Home / 111,238,129.76-166,823,112.26-76,915,094.78

Finding the Fourth Proportional to 111,238,129.76, 166,823,112.26 and 76,915,094.78

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Solution

The fourth proportional to 111,238,129.76, 166,823,112.26 and 76,915,094.78 is: 115,349,076.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,238,129.76 : 166,823,112.26 = 76,915,094.78 : x
  2. Step 2: Convert to fraction form
    111,238,129.76/166,823,112.26 = 76,915,094.78/x
  3. Step 3: Cross multiply
    111,238,129.76x = 166,823,112.26 × 76,915,094.78
  4. Step 4: Simplify right side
    111,238,129.76x = 12,831,215,491,581,824
  5. Step 5: Solve for x
    x = 12,831,215,491,581,824/111,238,129.76
  6. Step 6: Final answer
    x = 115,349,076.08

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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.