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Finding the Fourth Proportional to 93,650.40, 140,552.40 and 90,578.40

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Solution

The fourth proportional to 93,650.40, 140,552.40 and 90,578.40 is: 135,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,650.40 : 140,552.40 = 90,578.40 : x
  2. Step 2: Convert to fraction form
    93,650.40/140,552.40 = 90,578.40/x
  3. Step 3: Cross multiply
    93,650.40x = 140,552.40 × 90,578.40
  4. Step 4: Simplify right side
    93,650.40x = 12,731,011,508.16
  5. Step 5: Solve for x
    x = 12,731,011,508.16/93,650.40
  6. Step 6: Final answer
    x = 135,941.88

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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.