Home / 120,389,963.45-166,138,999.87-65,385,819.95

Finding the Fourth Proportional to 120,389,963.45, 166,138,999.87 and 65,385,819.95

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Solution

The fourth proportional to 120,389,963.45, 166,138,999.87 and 65,385,819.95 is: 90,232,893.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389,963.45 : 166,138,999.87 = 65,385,819.95 : x
  2. Step 2: Convert to fraction form
    120,389,963.45/166,138,999.87 = 65,385,819.95/x
  3. Step 3: Cross multiply
    120,389,963.45x = 166,138,999.87 × 65,385,819.95
  4. Step 4: Simplify right side
    120,389,963.45x = 10,863,134,732,009,430
  5. Step 5: Solve for x
    x = 10,863,134,732,009,430/120,389,963.45
  6. Step 6: Final answer
    x = 90,232,893.35

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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.