Home / 115,499.04-159,388.20-65,197.68

Finding the Fourth Proportional to 115,499.04, 159,388.20 and 65,197.68

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Solution

The fourth proportional to 115,499.04, 159,388.20 and 65,197.68 is: 89,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,499.04 : 159,388.20 = 65,197.68 : x
  2. Step 2: Convert to fraction form
    115,499.04/159,388.20 = 65,197.68/x
  3. Step 3: Cross multiply
    115,499.04x = 159,388.20 × 65,197.68
  4. Step 4: Simplify right side
    115,499.04x = 10,391,740,859.38
  5. Step 5: Solve for x
    x = 10,391,740,859.38/115,499.04
  6. Step 6: Final answer
    x = 89,972.53

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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.