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Finding the Fourth Proportional to 93,142.74, 128,652.39 and 67,608.30

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Solution

The fourth proportional to 93,142.74, 128,652.39 and 67,608.30 is: 93,383.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,142.74 : 128,652.39 = 67,608.30 : x
  2. Step 2: Convert to fraction form
    93,142.74/128,652.39 = 67,608.30/x
  3. Step 3: Cross multiply
    93,142.74x = 128,652.39 × 67,608.30
  4. Step 4: Simplify right side
    93,142.74x = 8,697,969,378.84
  5. Step 5: Solve for x
    x = 8,697,969,378.84/93,142.74
  6. Step 6: Final answer
    x = 93,383.22

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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.