Home / 120,842,223.78-166,630,305.75-81,615,898.36

Finding the Fourth Proportional to 120,842,223.78, 166,630,305.75 and 81,615,898.36

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Solution

The fourth proportional to 120,842,223.78, 166,630,305.75 and 81,615,898.36 is: 112,540,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,842,223.78 : 166,630,305.75 = 81,615,898.36 : x
  2. Step 2: Convert to fraction form
    120,842,223.78/166,630,305.75 = 81,615,898.36/x
  3. Step 3: Cross multiply
    120,842,223.78x = 166,630,305.75 × 81,615,898.36
  4. Step 4: Simplify right side
    120,842,223.78x = 13,599,682,098,148,634
  5. Step 5: Solve for x
    x = 13,599,682,098,148,634/120,842,223.78
  6. Step 6: Final answer
    x = 112,540,812.91

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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.