Home / 93,050.28-128,351.79-81,142.20

Finding the Fourth Proportional to 93,050.28, 128,351.79 and 81,142.20

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Solution

The fourth proportional to 93,050.28, 128,351.79 and 81,142.20 is: 111,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,050.28 : 128,351.79 = 81,142.20 : x
  2. Step 2: Convert to fraction form
    93,050.28/128,351.79 = 81,142.20/x
  3. Step 3: Cross multiply
    93,050.28x = 128,351.79 × 81,142.20
  4. Step 4: Simplify right side
    93,050.28x = 10,414,746,614.54
  5. Step 5: Solve for x
    x = 10,414,746,614.54/93,050.28
  6. Step 6: Final answer
    x = 111,926.01

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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.