Home / 155,743.64-214,923.66-87,767.56

Finding the Fourth Proportional to 155,743.64, 214,923.66 and 87,767.56

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Solution

The fourth proportional to 155,743.64, 214,923.66 and 87,767.56 is: 121,117.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,743.64 : 214,923.66 = 87,767.56 : x
  2. Step 2: Convert to fraction form
    155,743.64/214,923.66 = 87,767.56/x
  3. Step 3: Cross multiply
    155,743.64x = 214,923.66 × 87,767.56
  4. Step 4: Simplify right side
    155,743.64x = 18,863,325,224.47
  5. Step 5: Solve for x
    x = 18,863,325,224.47/155,743.64
  6. Step 6: Final answer
    x = 121,117.79

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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.