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Finding the Fourth Proportional to 93,396.67, 128,920.68 and 55,156.37

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Solution

The fourth proportional to 93,396.67, 128,920.68 and 55,156.37 is: 76,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,396.67 : 128,920.68 = 55,156.37 : x
  2. Step 2: Convert to fraction form
    93,396.67/128,920.68 = 55,156.37/x
  3. Step 3: Cross multiply
    93,396.67x = 128,920.68 × 55,156.37
  4. Step 4: Simplify right side
    93,396.67x = 7,110,797,049.03
  5. Step 5: Solve for x
    x = 7,110,797,049.03/93,396.67
  6. Step 6: Final answer
    x = 76,135.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.