Home / 115,936.08-159,991.56-65,639.76

Finding the Fourth Proportional to 115,936.08, 159,991.56 and 65,639.76

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Solution

The fourth proportional to 115,936.08, 159,991.56 and 65,639.76 is: 90,582.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,936.08 : 159,991.56 = 65,639.76 : x
  2. Step 2: Convert to fraction form
    115,936.08/159,991.56 = 65,639.76/x
  3. Step 3: Cross multiply
    115,936.08x = 159,991.56 × 65,639.76
  4. Step 4: Simplify right side
    115,936.08x = 10,501,807,600.43
  5. Step 5: Solve for x
    x = 10,501,807,600.43/115,936.08
  6. Step 6: Final answer
    x = 90,582.74

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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.