Home / 93,315.10-139,972.65-89,815.90

Finding the Fourth Proportional to 93,315.10, 139,972.65 and 89,815.90

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Solution

The fourth proportional to 93,315.10, 139,972.65 and 89,815.90 is: 134,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,315.10 : 139,972.65 = 89,815.90 : x
  2. Step 2: Convert to fraction form
    93,315.10/139,972.65 = 89,815.90/x
  3. Step 3: Cross multiply
    93,315.10x = 139,972.65 × 89,815.90
  4. Step 4: Simplify right side
    93,315.10x = 12,571,769,535.14
  5. Step 5: Solve for x
    x = 12,571,769,535.14/93,315.10
  6. Step 6: Final answer
    x = 134,723.85

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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.