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Finding the Fourth Proportional to 93,609.75, 140,414.63 and 85,490.51

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Solution

The fourth proportional to 93,609.75, 140,414.63 and 85,490.51 is: 128,235.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,609.75 : 140,414.63 = 85,490.51 : x
  2. Step 2: Convert to fraction form
    93,609.75/140,414.63 = 85,490.51/x
  3. Step 3: Cross multiply
    93,609.75x = 140,414.63 × 85,490.51
  4. Step 4: Simplify right side
    93,609.75x = 12,004,118,505.61
  5. Step 5: Solve for x
    x = 12,004,118,505.61/93,609.75
  6. Step 6: Final answer
    x = 128,235.77

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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.