Home / 115,704.74-159,687.33-64,720.30

Finding the Fourth Proportional to 115,704.74, 159,687.33 and 64,720.30

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Solution

The fourth proportional to 115,704.74, 159,687.33 and 64,720.30 is: 89,322.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,704.74 : 159,687.33 = 64,720.30 : x
  2. Step 2: Convert to fraction form
    115,704.74/159,687.33 = 64,720.30/x
  3. Step 3: Cross multiply
    115,704.74x = 159,687.33 × 64,720.30
  4. Step 4: Simplify right side
    115,704.74x = 10,335,011,903.80
  5. Step 5: Solve for x
    x = 10,335,011,903.80/115,704.74
  6. Step 6: Final answer
    x = 89,322.29

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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.