Home / 120,389,986.76-166,139,032.03-65,385,843.26

Finding the Fourth Proportional to 120,389,986.76, 166,139,032.03 and 65,385,843.26

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Solution

The fourth proportional to 120,389,986.76, 166,139,032.03 and 65,385,843.26 is: 90,232,925.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389,986.76 : 166,139,032.03 = 65,385,843.26 : x
  2. Step 2: Convert to fraction form
    120,389,986.76/166,139,032.03 = 65,385,843.26/x
  3. Step 3: Cross multiply
    120,389,986.76x = 166,139,032.03 × 65,385,843.26
  4. Step 4: Simplify right side
    120,389,986.76x = 10,863,140,706,687,540
  5. Step 5: Solve for x
    x = 10,863,140,706,687,540/120,389,986.76
  6. Step 6: Final answer
    x = 90,232,925.51

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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.