Home / 115,608.10-159,538.70-64,620.76

Finding the Fourth Proportional to 115,608.10, 159,538.70 and 64,620.76

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Solution

The fourth proportional to 115,608.10, 159,538.70 and 64,620.76 is: 89,176.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,608.10 : 159,538.70 = 64,620.76 : x
  2. Step 2: Convert to fraction form
    115,608.10/159,538.70 = 64,620.76/x
  3. Step 3: Cross multiply
    115,608.10x = 159,538.70 × 64,620.76
  4. Step 4: Simplify right side
    115,608.10x = 10,309,512,043.41
  5. Step 5: Solve for x
    x = 10,309,512,043.41/115,608.10
  6. Step 6: Final answer
    x = 89,176.38

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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.