Home / 156,388.73-215,816.81-84,768.42

Finding the Fourth Proportional to 156,388.73, 215,816.81 and 84,768.42

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Solution

The fourth proportional to 156,388.73, 215,816.81 and 84,768.42 is: 116,980.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,388.73 : 215,816.81 = 84,768.42 : x
  2. Step 2: Convert to fraction form
    156,388.73/215,816.81 = 84,768.42/x
  3. Step 3: Cross multiply
    156,388.73x = 215,816.81 × 84,768.42
  4. Step 4: Simplify right side
    156,388.73x = 18,294,450,378.61
  5. Step 5: Solve for x
    x = 18,294,450,378.61/156,388.73
  6. Step 6: Final answer
    x = 116,980.62

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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.