Home / 115,290.12-159,098.94-64,989.12

Finding the Fourth Proportional to 115,290.12, 159,098.94 and 64,989.12

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Solution

The fourth proportional to 115,290.12, 159,098.94 and 64,989.12 is: 89,684.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,290.12 : 159,098.94 = 64,989.12 : x
  2. Step 2: Convert to fraction form
    115,290.12/159,098.94 = 64,989.12/x
  3. Step 3: Cross multiply
    115,290.12x = 159,098.94 × 64,989.12
  4. Step 4: Simplify right side
    115,290.12x = 10,339,700,103.53
  5. Step 5: Solve for x
    x = 10,339,700,103.53/115,290.12
  6. Step 6: Final answer
    x = 89,684.18

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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.