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Finding the Fourth Proportional to 88,854.20, 133,354.20 and 85,938.20

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Solution

The fourth proportional to 88,854.20, 133,354.20 and 85,938.20 is: 128,977.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,854.20 : 133,354.20 = 85,938.20 : x
  2. Step 2: Convert to fraction form
    88,854.20/133,354.20 = 85,938.20/x
  3. Step 3: Cross multiply
    88,854.20x = 133,354.20 × 85,938.20
  4. Step 4: Simplify right side
    88,854.20x = 11,460,219,910.44
  5. Step 5: Solve for x
    x = 11,460,219,910.44/88,854.20
  6. Step 6: Final answer
    x = 128,977.81

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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.