Home / 115,500.64-159,389.68-65,201.76

Finding the Fourth Proportional to 115,500.64, 159,389.68 and 65,201.76

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Solution

The fourth proportional to 115,500.64, 159,389.68 and 65,201.76 is: 89,977.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,500.64 : 159,389.68 = 65,201.76 : x
  2. Step 2: Convert to fraction form
    115,500.64/159,389.68 = 65,201.76/x
  3. Step 3: Cross multiply
    115,500.64x = 159,389.68 × 65,201.76
  4. Step 4: Simplify right side
    115,500.64x = 10,392,487,661.84
  5. Step 5: Solve for x
    x = 10,392,487,661.84/115,500.64
  6. Step 6: Final answer
    x = 89,977.75

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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.