Home / 115,698.24-159,667.20-65,400.48

Finding the Fourth Proportional to 115,698.24, 159,667.20 and 65,400.48

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Solution

The fourth proportional to 115,698.24, 159,667.20 and 65,400.48 is: 90,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,698.24 : 159,667.20 = 65,400.48 : x
  2. Step 2: Convert to fraction form
    115,698.24/159,667.20 = 65,400.48/x
  3. Step 3: Cross multiply
    115,698.24x = 159,667.20 × 65,400.48
  4. Step 4: Simplify right side
    115,698.24x = 10,442,311,520.26
  5. Step 5: Solve for x
    x = 10,442,311,520.26/115,698.24
  6. Step 6: Final answer
    x = 90,254.71

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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.