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Finding the Fourth Proportional to 139,892,540.40, 209,838,810.60 and 44,154,428.40

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Solution

The fourth proportional to 139,892,540.40, 209,838,810.60 and 44,154,428.40 is: 66,231,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,892,540.40 : 209,838,810.60 = 44,154,428.40 : x
  2. Step 2: Convert to fraction form
    139,892,540.40/209,838,810.60 = 44,154,428.40/x
  3. Step 3: Cross multiply
    139,892,540.40x = 209,838,810.60 × 44,154,428.40
  4. Step 4: Simplify right side
    139,892,540.40x = 9,265,312,738,178,860
  5. Step 5: Solve for x
    x = 9,265,312,738,178,860/139,892,540.40
  6. Step 6: Final answer
    x = 66,231,642.60

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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.