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Finding the Fourth Proportional to 93,486.20, 140,229.30 and 89,857.40

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Solution

The fourth proportional to 93,486.20, 140,229.30 and 89,857.40 is: 134,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,486.20 : 140,229.30 = 89,857.40 : x
  2. Step 2: Convert to fraction form
    93,486.20/140,229.30 = 89,857.40/x
  3. Step 3: Cross multiply
    93,486.20x = 140,229.30 × 89,857.40
  4. Step 4: Simplify right side
    93,486.20x = 12,600,640,301.82
  5. Step 5: Solve for x
    x = 12,600,640,301.82/93,486.20
  6. Step 6: Final answer
    x = 134,786.10

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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.