Home / 131,122,338.87-180,949,405.58-72,385,486.64

Finding the Fourth Proportional to 131,122,338.87, 180,949,405.58 and 72,385,486.64

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Solution

The fourth proportional to 131,122,338.87, 180,949,405.58 and 72,385,486.64 is: 99,892,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,122,338.87 : 180,949,405.58 = 72,385,486.64 : x
  2. Step 2: Convert to fraction form
    131,122,338.87/180,949,405.58 = 72,385,486.64/x
  3. Step 3: Cross multiply
    131,122,338.87x = 180,949,405.58 × 72,385,486.64
  4. Step 4: Simplify right side
    131,122,338.87x = 13,098,110,780,522,594
  5. Step 5: Solve for x
    x = 13,098,110,780,522,594/131,122,338.87
  6. Step 6: Final answer
    x = 99,892,290.62

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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.