Home / 158,728.69-219,040.66-87,106.87

Finding the Fourth Proportional to 158,728.69, 219,040.66 and 87,106.87

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Solution

The fourth proportional to 158,728.69, 219,040.66 and 87,106.87 is: 120,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,728.69 : 219,040.66 = 87,106.87 : x
  2. Step 2: Convert to fraction form
    158,728.69/219,040.66 = 87,106.87/x
  3. Step 3: Cross multiply
    158,728.69x = 219,040.66 × 87,106.87
  4. Step 4: Simplify right side
    158,728.69x = 19,079,946,022.33
  5. Step 5: Solve for x
    x = 19,079,946,022.33/158,728.69
  6. Step 6: Final answer
    x = 120,204.77

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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.