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Finding the Fourth Proportional to 93,293.80, 139,940.70 and 53,830.60

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Solution

The fourth proportional to 93,293.80, 139,940.70 and 53,830.60 is: 80,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,293.80 : 139,940.70 = 53,830.60 : x
  2. Step 2: Convert to fraction form
    93,293.80/139,940.70 = 53,830.60/x
  3. Step 3: Cross multiply
    93,293.80x = 139,940.70 × 53,830.60
  4. Step 4: Simplify right side
    93,293.80x = 7,533,091,845.42
  5. Step 5: Solve for x
    x = 7,533,091,845.42/93,293.80
  6. Step 6: Final answer
    x = 80,745.90

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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.