Home / 158,629.32-218,908.26-87,009.66

Finding the Fourth Proportional to 158,629.32, 218,908.26 and 87,009.66

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Solution

The fourth proportional to 158,629.32, 218,908.26 and 87,009.66 is: 120,073.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,629.32 : 218,908.26 = 87,009.66 : x
  2. Step 2: Convert to fraction form
    158,629.32/218,908.26 = 87,009.66/x
  3. Step 3: Cross multiply
    158,629.32x = 218,908.26 × 87,009.66
  4. Step 4: Simplify right side
    158,629.32x = 19,047,133,273.79
  5. Step 5: Solve for x
    x = 19,047,133,273.79/158,629.32
  6. Step 6: Final answer
    x = 120,073.22

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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.