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Finding the Fourth Proportional to 93,006.20, 139,217.70 and 66,762.20

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Solution

The fourth proportional to 93,006.20, 139,217.70 and 66,762.20 is: 99,933.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,006.20 : 139,217.70 = 66,762.20 : x
  2. Step 2: Convert to fraction form
    93,006.20/139,217.70 = 66,762.20/x
  3. Step 3: Cross multiply
    93,006.20x = 139,217.70 × 66,762.20
  4. Step 4: Simplify right side
    93,006.20x = 9,294,479,930.94
  5. Step 5: Solve for x
    x = 9,294,479,930.94/93,006.20
  6. Step 6: Final answer
    x = 99,933.98

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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.