Home / 120,389,999.69-166,139,049.95-65,385,856.19

Finding the Fourth Proportional to 120,389,999.69, 166,139,049.95 and 65,385,856.19

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Solution

The fourth proportional to 120,389,999.69, 166,139,049.95 and 65,385,856.19 is: 90,232,943.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389,999.69 : 166,139,049.95 = 65,385,856.19 : x
  2. Step 2: Convert to fraction form
    120,389,999.69/166,139,049.95 = 65,385,856.19/x
  3. Step 3: Cross multiply
    120,389,999.69x = 166,139,049.95 × 65,385,856.19
  4. Step 4: Simplify right side
    120,389,999.69x = 10,863,144,027,907,542
  5. Step 5: Solve for x
    x = 10,863,144,027,907,542/120,389,999.69
  6. Step 6: Final answer
    x = 90,232,943.40

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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.