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Finding the Fourth Proportional to 93,506.08, 139,930.80 and 80,515.12

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Solution

The fourth proportional to 93,506.08, 139,930.80 and 80,515.12 is: 120,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,506.08 : 139,930.80 = 80,515.12 : x
  2. Step 2: Convert to fraction form
    93,506.08/139,930.80 = 80,515.12/x
  3. Step 3: Cross multiply
    93,506.08x = 139,930.80 × 80,515.12
  4. Step 4: Simplify right side
    93,506.08x = 11,266,545,153.70
  5. Step 5: Solve for x
    x = 11,266,545,153.70/93,506.08
  6. Step 6: Final answer
    x = 120,489.97

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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.