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Finding the Fourth Proportional to 93,453.92, 128,951.21 and 55,208.15

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Solution

The fourth proportional to 93,453.92, 128,951.21 and 55,208.15 is: 76,178.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,453.92 : 128,951.21 = 55,208.15 : x
  2. Step 2: Convert to fraction form
    93,453.92/128,951.21 = 55,208.15/x
  3. Step 3: Cross multiply
    93,453.92x = 128,951.21 × 55,208.15
  4. Step 4: Simplify right side
    93,453.92x = 7,119,157,468.32
  5. Step 5: Solve for x
    x = 7,119,157,468.32/93,453.92
  6. Step 6: Final answer
    x = 76,178.26

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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.