Home / 93,143.73-128,555.12-54,901.04

Finding the Fourth Proportional to 93,143.73, 128,555.12 and 54,901.04

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Solution

The fourth proportional to 93,143.73, 128,555.12 and 54,901.04 is: 75,773.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.73 : 128,555.12 = 54,901.04 : x
  2. Step 2: Convert to fraction form
    93,143.73/128,555.12 = 54,901.04/x
  3. Step 3: Cross multiply
    93,143.73x = 128,555.12 × 54,901.04
  4. Step 4: Simplify right side
    93,143.73x = 7,057,809,785.32
  5. Step 5: Solve for x
    x = 7,057,809,785.32/93,143.73
  6. Step 6: Final answer
    x = 75,773.33

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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.