Home / 120,389,990.76-166,139,037.56-65,385,847.26

Finding the Fourth Proportional to 120,389,990.76, 166,139,037.56 and 65,385,847.26

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Solution

The fourth proportional to 120,389,990.76, 166,139,037.56 and 65,385,847.26 is: 90,232,931.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389,990.76 : 166,139,037.56 = 65,385,847.26 : x
  2. Step 2: Convert to fraction form
    120,389,990.76/166,139,037.56 = 65,385,847.26/x
  3. Step 3: Cross multiply
    120,389,990.76x = 166,139,037.56 × 65,385,847.26
  4. Step 4: Simplify right side
    120,389,990.76x = 10,863,141,733,821,562
  5. Step 5: Solve for x
    x = 10,863,141,733,821,562/120,389,990.76
  6. Step 6: Final answer
    x = 90,232,931.04

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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.