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Finding the Fourth Proportional to 139,892,530.40, 209,838,795.60 and 44,154,418.40

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Solution

The fourth proportional to 139,892,530.40, 209,838,795.60 and 44,154,418.40 is: 66,231,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,892,530.40 : 209,838,795.60 = 44,154,418.40 : x
  2. Step 2: Convert to fraction form
    139,892,530.40/209,838,795.60 = 44,154,418.40/x
  3. Step 3: Cross multiply
    139,892,530.40x = 209,838,795.60 × 44,154,418.40
  4. Step 4: Simplify right side
    139,892,530.40x = 9,265,309,977,474,478
  5. Step 5: Solve for x
    x = 9,265,309,977,474,478/139,892,530.40
  6. Step 6: Final answer
    x = 66,231,627.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.