Home / 120,389,988.26-166,139,034.11-65,385,844.76

Finding the Fourth Proportional to 120,389,988.26, 166,139,034.11 and 65,385,844.76

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Solution

The fourth proportional to 120,389,988.26, 166,139,034.11 and 65,385,844.76 is: 90,232,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389,988.26 : 166,139,034.11 = 65,385,844.76 : x
  2. Step 2: Convert to fraction form
    120,389,988.26/166,139,034.11 = 65,385,844.76/x
  3. Step 3: Cross multiply
    120,389,988.26x = 166,139,034.11 × 65,385,844.76
  4. Step 4: Simplify right side
    120,389,988.26x = 10,863,141,091,735,180
  5. Step 5: Solve for x
    x = 10,863,141,091,735,180/120,389,988.26
  6. Step 6: Final answer
    x = 90,232,927.58

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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.