Home / 137,441.28-189,587.52-87,052.80

Finding the Fourth Proportional to 137,441.28, 189,587.52 and 87,052.80

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Solution

The fourth proportional to 137,441.28, 189,587.52 and 87,052.80 is: 120,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,441.28 : 189,587.52 = 87,052.80 : x
  2. Step 2: Convert to fraction form
    137,441.28/189,587.52 = 87,052.80/x
  3. Step 3: Cross multiply
    137,441.28x = 189,587.52 × 87,052.80
  4. Step 4: Simplify right side
    137,441.28x = 16,504,124,461.06
  5. Step 5: Solve for x
    x = 16,504,124,461.06/137,441.28
  6. Step 6: Final answer
    x = 120,081.28

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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.