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Finding the Fourth Proportional to 93,313.10, 139,969.65 and 89,813.90

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Solution

The fourth proportional to 93,313.10, 139,969.65 and 89,813.90 is: 134,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,313.10 : 139,969.65 = 89,813.90 : x
  2. Step 2: Convert to fraction form
    93,313.10/139,969.65 = 89,813.90/x
  3. Step 3: Cross multiply
    93,313.10x = 139,969.65 × 89,813.90
  4. Step 4: Simplify right side
    93,313.10x = 12,571,220,148.14
  5. Step 5: Solve for x
    x = 12,571,220,148.14/93,313.10
  6. Step 6: Final answer
    x = 134,720.85

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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.