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Finding the Fourth Proportional to 139,551.60, 209,327.40 and 134,740.20

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Solution

The fourth proportional to 139,551.60, 209,327.40 and 134,740.20 is: 202,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,551.60 : 209,327.40 = 134,740.20 : x
  2. Step 2: Convert to fraction form
    139,551.60/209,327.40 = 134,740.20/x
  3. Step 3: Cross multiply
    139,551.60x = 209,327.40 × 134,740.20
  4. Step 4: Simplify right side
    139,551.60x = 28,204,815,741.48
  5. Step 5: Solve for x
    x = 28,204,815,741.48/139,551.60
  6. Step 6: Final answer
    x = 202,110.30

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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.