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Finding the Fourth Proportional to 201,749.60, 302,689.20 and 89,386.40

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Solution

The fourth proportional to 201,749.60, 302,689.20 and 89,386.40 is: 134,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,749.60 : 302,689.20 = 89,386.40 : x
  2. Step 2: Convert to fraction form
    201,749.60/302,689.20 = 89,386.40/x
  3. Step 3: Cross multiply
    201,749.60x = 302,689.20 × 89,386.40
  4. Step 4: Simplify right side
    201,749.60x = 27,056,297,906.88
  5. Step 5: Solve for x
    x = 27,056,297,906.88/201,749.60
  6. Step 6: Final answer
    x = 134,108.31

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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.