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Finding the Fourth Proportional to 202,139.60, 303,209.40 and 70,811.60

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Solution

The fourth proportional to 202,139.60, 303,209.40 and 70,811.60 is: 106,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,139.60 : 303,209.40 = 70,811.60 : x
  2. Step 2: Convert to fraction form
    202,139.60/303,209.40 = 70,811.60/x
  3. Step 3: Cross multiply
    202,139.60x = 303,209.40 × 70,811.60
  4. Step 4: Simplify right side
    202,139.60x = 21,470,742,749.04
  5. Step 5: Solve for x
    x = 21,470,742,749.04/202,139.60
  6. Step 6: Final answer
    x = 106,217.40

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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.