Home / 120,118,043.20-165,763,120.80-65,113,729.60

Finding the Fourth Proportional to 120,118,043.20, 165,763,120.80 and 65,113,729.60

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Solution

The fourth proportional to 120,118,043.20, 165,763,120.80 and 65,113,729.60 is: 89,857,066.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,118,043.20 : 165,763,120.80 = 65,113,729.60 : x
  2. Step 2: Convert to fraction form
    120,118,043.20/165,763,120.80 = 65,113,729.60/x
  3. Step 3: Cross multiply
    120,118,043.20x = 165,763,120.80 × 65,113,729.60
  4. Step 4: Simplify right side
    120,118,043.20x = 10,793,455,025,423,336
  5. Step 5: Solve for x
    x = 10,793,455,025,423,336/120,118,043.20
  6. Step 6: Final answer
    x = 89,857,066.75

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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.