Home / 115,776.92-159,780.74-64,794.76

Finding the Fourth Proportional to 115,776.92, 159,780.74 and 64,794.76

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Solution

The fourth proportional to 115,776.92, 159,780.74 and 64,794.76 is: 89,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,776.92 : 159,780.74 = 64,794.76 : x
  2. Step 2: Convert to fraction form
    115,776.92/159,780.74 = 64,794.76/x
  3. Step 3: Cross multiply
    115,776.92x = 159,780.74 × 64,794.76
  4. Step 4: Simplify right side
    115,776.92x = 10,352,953,977.50
  5. Step 5: Solve for x
    x = 10,352,953,977.50/115,776.92
  6. Step 6: Final answer
    x = 89,421.57

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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.