Home / 115,811.44-159,826.86-64,823.20

Finding the Fourth Proportional to 115,811.44, 159,826.86 and 64,823.20

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Solution

The fourth proportional to 115,811.44, 159,826.86 and 64,823.20 is: 89,459.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,811.44 : 159,826.86 = 64,823.20 : x
  2. Step 2: Convert to fraction form
    115,811.44/159,826.86 = 64,823.20/x
  3. Step 3: Cross multiply
    115,811.44x = 159,826.86 × 64,823.20
  4. Step 4: Simplify right side
    115,811.44x = 10,360,488,511.15
  5. Step 5: Solve for x
    x = 10,360,488,511.15/115,811.44
  6. Step 6: Final answer
    x = 89,459.97

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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.