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Finding the Fourth Proportional to 139,419.64, 209,098.10 and 39,577.68

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Solution

The fourth proportional to 139,419.64, 209,098.10 and 39,577.68 is: 59,357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,419.64 : 209,098.10 = 39,577.68 : x
  2. Step 2: Convert to fraction form
    139,419.64/209,098.10 = 39,577.68/x
  3. Step 3: Cross multiply
    139,419.64x = 209,098.10 × 39,577.68
  4. Step 4: Simplify right side
    139,419.64x = 8,275,617,690.41
  5. Step 5: Solve for x
    x = 8,275,617,690.41/139,419.64
  6. Step 6: Final answer
    x = 59,357.62

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1.5x scale

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.