Home / 136,415.72-188,258.39-79,055.16

Finding the Fourth Proportional to 136,415.72, 188,258.39 and 79,055.16

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Solution

The fourth proportional to 136,415.72, 188,258.39 and 79,055.16 is: 109,098.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,415.72 : 188,258.39 = 79,055.16 : x
  2. Step 2: Convert to fraction form
    136,415.72/188,258.39 = 79,055.16/x
  3. Step 3: Cross multiply
    136,415.72x = 188,258.39 × 79,055.16
  4. Step 4: Simplify right side
    136,415.72x = 14,882,797,142.79
  5. Step 5: Solve for x
    x = 14,882,797,142.79/136,415.72
  6. Step 6: Final answer
    x = 109,098.84

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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.