Home / 115,933.78-159,988.62-65,632.78

Finding the Fourth Proportional to 115,933.78, 159,988.62 and 65,632.78

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Solution

The fourth proportional to 115,933.78, 159,988.62 and 65,632.78 is: 90,573.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,933.78 : 159,988.62 = 65,632.78 : x
  2. Step 2: Convert to fraction form
    115,933.78/159,988.62 = 65,632.78/x
  3. Step 3: Cross multiply
    115,933.78x = 159,988.62 × 65,632.78
  4. Step 4: Simplify right side
    115,933.78x = 10,500,497,975.89
  5. Step 5: Solve for x
    x = 10,500,497,975.89/115,933.78
  6. Step 6: Final answer
    x = 90,573.24

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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.