Home / 120,389,955.13-166,138,988.39-65,385,811.63

Finding the Fourth Proportional to 120,389,955.13, 166,138,988.39 and 65,385,811.63

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Solution

The fourth proportional to 120,389,955.13, 166,138,988.39 and 65,385,811.63 is: 90,232,881.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389,955.13 : 166,138,988.39 = 65,385,811.63 : x
  2. Step 2: Convert to fraction form
    120,389,955.13/166,138,988.39 = 65,385,811.63/x
  3. Step 3: Cross multiply
    120,389,955.13x = 166,138,988.39 × 65,385,811.63
  4. Step 4: Simplify right side
    120,389,955.13x = 10,863,132,599,267,296
  5. Step 5: Solve for x
    x = 10,863,132,599,267,296/120,389,955.13
  6. Step 6: Final answer
    x = 90,232,881.87

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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.