Home / 120,389,955.44-166,138,988.82-65,385,811.94

Finding the Fourth Proportional to 120,389,955.44, 166,138,988.82 and 65,385,811.94

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Solution

The fourth proportional to 120,389,955.44, 166,138,988.82 and 65,385,811.94 is: 90,232,882.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389,955.44 : 166,138,988.82 = 65,385,811.94 : x
  2. Step 2: Convert to fraction form
    120,389,955.44/166,138,988.82 = 65,385,811.94/x
  3. Step 3: Cross multiply
    120,389,955.44x = 166,138,988.82 × 65,385,811.94
  4. Step 4: Simplify right side
    120,389,955.44x = 10,863,132,679,138,166
  5. Step 5: Solve for x
    x = 10,863,132,679,138,166/120,389,955.44
  6. Step 6: Final answer
    x = 90,232,882.30

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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.